what is the sum of all digits for the number 10 ^ 25 - 58 ?
"10 ^ 25 is a 26 - digit number : 1 followed by 25 zeros . 10 ^ 25 - 58 is a 25 - digit number : 23 9 ' s and 42 at the end . the sum of the digits is 23 * 9 + 4 + 2 = 213 . the answer is e ."
multiply(add(divide(subtract(subtract(25, 10), const_2), const_2), 10), divide(add(subtract(25, 10), const_2), const_2))