Problem: the difference between the compound interest compounded annually and simple interest for 2 years at 20 % per annum is rs . 288 . find the principal ?
Rationale: "p = 288 ( 100 / 5 ) ^ 2 = > p = 7200 answer : d"
annotated_formula: divide(288, subtract(power(add(divide(20, const_100), const_1), 2), add(multiply(divide(20, const_100), 2), const_1)))