if the product of the integers from 1 to n is divisible by 686 , what is the least possible value of n ?
"686 = 7 x 7 x 7 x 2 n must include at least 7 , 2 * 7 , and 3 * 7 . the answer is c ."
multiply(divide(divide(divide(686, const_3), add(const_3, const_4)), add(const_3, const_4)), const_3)