This one is easy! You just divide the original amount by 100 (move the decimal point over two places)
750 / 100 = 7.5
Now you multiply that by the interest rate, which in this case is 7.
7.5 x 7 = 52.5
Now finally, you multiply that by the amount of years. In this case, 3.
52.5 x 3 = 157.5
That would be the amount added after three years! Remember, this is simple interest. Compound interest is a little more complex.
