Explanation:
Finding the (maximum) respective prime powers would yield the answer. Also we need not ... Is perfectly divisible by 720^n? ... So we can say that for any positive value of n it not divisible.
Reflecting on the past effects scrooges character by showing him what he could have had, but instead he chose money letting him realize that though he may be rich and successful there's more to life then money he learns he needs to live his life tp the fullest which changes him from being a greedy old man to a generous old man.