[프로그래머스] 콜라 문제

import java.util.*;
class Solution {
    public int solution(int a, int b, int n) {
        
        int answer = 0;
        
        while(true){
            if(n<a) break;
            answer += (n/a)*b;
            n = (n/a)*b + n%a;
        }
        return answer;
    }
}