# How to Sum Cells Ending with a Number

To count the numbers ending with one or more digits, you can use the RIGHT function. The RIGHT function is a text function but also works for numbers.

Example: You are working with a worksheet with the product in column A, the amount in column B, and the profit/loss in column C.

Question: What is the sum of numbers ending with 8 in column B?

=SUMPRODUCT(--(RIGHT(B2:B10,1)="8"), B2:B10)

The result returns 1,866.

Explanation:

• Step 1: RIGHT(B2:B10,1): To have the last digit of each number;
• Step 2: (RIGHT(B2:B10,1)="8"): If the last digit equals 8, it returns TRUE; otherwise, it returns FALSE;
• Step 3: (--(RIGHT(B2:B10,1)="8")): The double hyphen converts TRUE into one and FALSE into zero;
• Step 4: The SUMPRODUCT function returns the sum of the products of the new array.

You can use the following formula to have the sum of the numbers in column C when the corresponding cells in column B end with 8.

=SUMPRODUCT(--(RIGHT(B2:B10,1)="8"),C2:C10)

The result returns 1,358.77.

Notes: The SUMPRODUCT Function

The SUMPRODUCT function adds all the multiplication results for all arrays.

Formula:

=SUMPRODUCT(array1, [array2], …)

Explanations:

– Array1 is required; the first array is to multiply and add.
– Array2 is optional; the second array is to multiply and add.