Arithmetic progression is calculated from the first term and common difference, the sum of the progression of the specified range is displayed.

Enter the first term, the common difference, and the range of the progression you want to calculate and click the button "Calculate sum of arithmetic progression". The sum of the arithmetic progression in the specified range is calculated.

### The sum of 1th to 10th number in arithmetic progression whose the first term is 1 and the common difference is 3

1th number: 1

10th number: 28

The sum of 1th to 10th: 145