how many zeros does 10 ! end with ?
"according to above 10 ! has 10 / 5 = 2 = 2 trailing zeros . answer : e"
add(add(divide(10, add(const_4, const_1)), divide(subtract(10, add(const_4, const_1)), power(add(const_4, const_1), const_2))), divide(subtract(10, add(const_4, const_1)), power(add(const_4, const_1), const_3)))