# Running product finder

## World's simplest integer tool

This online utility calculates the running product of several integers and displays the step-by-step multiplication process in the output. You can load the input integer data in any format and quickly adjust the delimiter character in the options. You can also use the skip-zero option to avoid the product turning into zero if any of the integers in the data is zero. Created by math nerds from team Browserling.

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Running product finder tool
What is a running product finder?

With this browser-based program, you can find the running product (also known as the cumulative product) of multiple integer values. By default, the program accepts one integer per line in the input area, but if the integers come in a different format, you can change the integer separator character in the options. For example, if the input is comma-separated "10, 20, 30", then you can enter the comma "," in this option, or if the input is semicolon-separated "10; 20; 30", then you can enter the semicolon ";". The running product differs from the regular integer product in that it accumulates the intermediate results of the multiplication at every step of the computation and displays these intermediate partial products on the screen. For example, the regular product of integers 2, 4, 5, 6 is a single value and looks like this: 2×4×5×6 = 240 but the running product has four values: 2, 8, 40, 240. This is because the sequence starts with the integer 2, then it's multiplied by the second integer 2×4 = 8, then by the third 2×4×5 = 40, and then by the fourth 2×4×5×6 = 240. The integers 2, 8, 40, and 240 are cumulative (or intermediate) values of the computation. As you can see, the next integer is always multiplied by all the previous integers. If at any stage of the computation the value 0 is encountered, then all the following products (and the entire product) turns into 0. To prevent this zero result, use the "Avoid Zero Result" option that will skip all 0's in the input. You can also add position numbers of cumulative products by enabling the "Print Product Counter" option. Integerabulous!

Running product finder examples
Click to use

Increasing Running Product

This example calculates the running product of the first ten positive even integers. As there are no negative integers or zero values in the input, the partial products increase with each step. All partial results are displayed on individual lines and the last value is the total product of the entire multiplication.

2
4
6
8
10
12
14
16
18
20

2
8
48
384
3840
46080
645120
10321920
185794560
3715891200

**Required options**

Set the delimiter character to
match the delimiter in the
input integer list.

Add an ordinal before
each cumulative integer.

Avoid Zeros

In this example, there are unwanted zero values among the integers. If we carried out the multiplication, then at the third integer it would turn zero and never change. To avoid that, we enable the "Avoid Zero Product" mode. Now all zeros are skipped and only non-zero values are used in the computation. We also insert the ";" symbol in the separator option because the input integers use the semicolon character as the delimiter character.

7; -4; 0; -3; -9; 5; 6; -4; 8; -4; 10; -1

7
-28
-28
84
-756
-3780
-22680
90720
725760
-2903040
-29030400
29030400

**Required options**

Set the delimiter character to
match the delimiter in the
input integer list.

Skip all zero integers in the
sequence to avoid the results
from becoming zero.

Add an ordinal before
each cumulative integer.

Weekly Squat Program

In this example, we decided to create a weekly at-home workout program for squats. As we're just starting, we'll do just two squats on the first day and then double the number of squats every day. With the running product algorithm, we can examine the progress of training day after day. We can quickly see the exact number of squats we'll do every day. It turns out by the seventh day, we'll be doing 128 squats. Ouch!

2
2
2
2
2
2
2

1: 2
2: 4
3: 8
4: 16
5: 32
6: 64
7: 128

**Required options**

Set the delimiter character to
match the delimiter in the
input integer list.

Skip all zero integers in the
sequence to avoid the results
from becoming zero.

Add an ordinal before
each cumulative integer.

Pro tips
Master online integer tools

You can pass input to this tool via

__?input__query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlineintegertools.com/find-running-product

__?input__=2%0A4%0A6%0A8%0A10%0A12%0A14%0A16%0A18%0A20&input-separator=%5Cn&print-counter=false
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