Problem: a sum fetched total simple interest of 4016.25 at the rate of 9 p . c . p . a . in 5 years . what is the sum ?
Rationale: "let the sums be p . now , 45 % of p = 4016.25 or , p = 8925 answer a"
annotated_formula: divide(multiply(const_100, 4016.25), multiply(9, 5))