if the simple interest on a sum of money for 5 years at 18 % per annum is rs . 900 , what is the compound interest on the same sum at the rate and for the same time ?
"sum = ( 900 * 100 ) / ( 5 * 18 ) = rs . 1 , 000.00 c . i . on rs . rs . 1 , 000.00 for 5 years at 18 % = rs . 2 , 287.76 . = rs . 2 , 287.76 - 1 , 000.00 = rs . 1287.76 answer : a"
subtract(add(add(divide(multiply(divide(900, multiply(divide(18, const_100), 5)), 18), const_100), divide(900, multiply(divide(18, const_100), 5))), divide(multiply(add(divide(multiply(divide(900, multiply(divide(18, const_100), 5)), 18), const_100), divide(900, multiply(divide(18, const_100), 5))), 18), const_100)), divide(900, multiply(divide(18, const_100), 5)))