how many zeros does 65 ! end with ?
"according to above 65 ! has 65 / 5 + 65 / 25 = 13 + 2 = 15 trailing zeros . answer : b ."
add(add(divide(65, add(const_4, const_1)), divide(subtract(65, add(const_4, const_1)), power(add(const_4, const_1), const_2))), divide(subtract(65, add(const_4, const_1)), power(add(const_4, const_1), const_3)))