https://school.programmers.co.kr/learn/courses/30/lessons/120815
class Solution {
public int solution(int n) {
int max = 0;
for(int i=1; i<=n && i<=6; i++){
if(n%i==0 && 6%i==0){
max = i;
}
}
int answer = (n*6)/max;
return answer/6;
}
}