Given non negative number `a` and `b`, output result of `a/b` and `a%b` , can\'t use `/` and `%`.\nExample:\n```\na = 10\nb = 3\nans = "3 rem 1" ( string format)\n```\nThe question is similar to https://leetcode.com/problems/divide-two-integers/\n\n----------------------------------------\n\n**Follow-up:**\nWhat if `a` is a lot bigger than `b`, how to optimize? I heard there is a method using binary search for this case, but not sure how to apply it?

Given non negative number a and b, output result of a/b and a%b , can\'t use / and %.\nExample:\n\na = 10\nb = 3\nans = "3 rem 1" ( string format)\n\nThe questi