프로그래머스 lv0 치킨쿠폰

1. 개요

• https://school.programmers.co.kr/learn/courses/30/lessons/120884

2. 풀이

def solution(chicken):
    answer = 0
    
    while chicken >= 10:
        newCoupon = chicken//10
        answer += newCoupon
        chicken = newCoupon + chicken%10 
        
    return answer