# Progressive Compounding Result

Question asked by alanfink@comcast.net on May 15, 2018
Latest reply on May 15, 2018 by alanfink@comcast.net

I am looking for advise to best calculate and return a total result value based on progressive step values.

The attached excel file shows the scenario.

Input:

Total Unit Sales

Min Units Required

Step Award Amount

Based on Total Unit Sales, an award amount is given.  Minimum required Unit Sales is 2

For achieving 2 Unit Sales the Award is 200

For each additional Unit Sale >2 the award on the unit is progressive by 100.  So the third unit achieves award of 300.  4th unit achieves award of 400 and so on.

What i need help on is returning the cumulative award value based on given total unit sales.  The green highlighted area in the attached excel file.  So based on Unit Sales of 4 units then the result would be:

Award for 2 unit sales of 200 + Award to 3 unit sales of 300 + Award for 4 unit sales of 400 =900

Perhaps a custom function?

Thanks !