What is 19,800 at 16% for 7 years?
You do not state if simple interest or compounded interest. You also do not state the currency unit.
Simple interest return over 7 years is 22176
Assumption: The question is based on simple interest which is when you get the same amount each year.
Note that compound interest is when the sum you receive gets more and more ( it grows ).
So for 1 year your interest is 3168
So for 7 years your interest is