what is the difference between the largest number and the least number written with the digits 9 , 3 , 1 , 2 ?
"explanation : 1239 9321 - - - - - - - - - - - - 8082 answer : d"
subtract(add(add(add(multiply(multiply(9, const_100), const_10), multiply(const_4.0, const_100)), multiply(3, const_10)), 1), add(add(add(const_1000, multiply(3, const_100)), multiply(2, const_10)), 9))