# Cell B15 Contains The Formula =B14+B15. You Created A:

Are you familiar with Excel spreadsheets? Have you ever created a formula in a cell for a specific purpose? If so, you may have encountered a situation where cell B15 contains the formula =B14+B15, and wondered “what have I created?”.

The answer is simple – this formula creates an incremental total. Incremental totals are a way to track the sum of your data as it changes over time. This can be an invaluable tool when you are dealing with a large set of complex numbers.

For example, if you have a table of sales figures for each month, with line items for each product, you can use an incremental total to sum up the total sales of each month quickly. To see how this is done, let’s walk through an example.

Let’s say that you have a spreadsheet with the following data in it:

Month Product A Product B Product C
January 100 150 200
February 110 160 210
March 120 170 220

To calculate the total sales for each month, you would need to add up the numbers for each product. This can be a tedious task, unless you use an incremental total. To do this, you would enter the formula =B14+B15 in cell B15, and then copy it down the column for each month.