First find 12% of 9,000,000 and which is
12
________ × 100 = 7,500
9,000,000
After finding the 12% multiply the 7,500 by 5 to know how much the professional baseball player would make in a five year period as increase.
7,500×5= 37,500
Add the result to the 9,000,000 and that is what the professional would get at the end of five years as a salary.
9,000,000 + 37,500= $9,037,500
(I tried to make it as simple as possible)