what is the sum of all digits for the number 10 ^ 27 - 48 ?
"10 ^ 27 is a 28 - digit number : 1 followed by 27 zeros . 10 ^ 27 - 48 is a 27 - digit number : 25 9 ' s and 52 at the end . the sum of the digits is 25 * 9 + 5 + 2 = 232 . the answer is c ."
multiply(add(divide(subtract(subtract(27, 10), const_2), const_2), 10), divide(add(subtract(27, 10), const_2), const_2))