find the principle on a certain sum of money at 9 % per annum for 2 2 / 5 years if the amount being rs . 1120 ?
1120 = p [ 1 + ( 9 * 12 / 5 ) / 100 ] p = 921.05 answer : e
divide(1120, add(divide(multiply(divide(add(multiply(2, 5), 2), 5), 9), const_100), const_1))