find the simple interest on rs . 78000 at 15 ( 2 / 5 ) % per annum for 9 months .
"explanation : p = rs . 78000 , r = 77 / 5 % p . a and t = 9 / 12 years = ¾ years therefore , s . i = ( p * r * t ) / 100 = ( 78000 * 77 / 5 * ¾ * 1 / 100 ) = rs . 9009 answer : a"
multiply(multiply(multiply(add(multiply(multiply(multiply(2, const_3), const_100), const_100), multiply(multiply(multiply(const_3, const_3), const_100), multiply(add(5, 2), 2))), divide(add(multiply(15, 5), 2), 5)), divide(multiply(5, 5), multiply(2, multiply(2, 5)))), divide(const_1, const_100))