1 0
3 3 = 3 × 81 + 3 × 80 = 3 × 8 + 3 × 1 = 24 + 3 = 27
3 3 = 3 ×161 + 3 × 160 = 3 × 16 + 3 × 1 = 48 + 3 = 51
进制转换
原文：https://www.cnblogs.com/liuyang-520/p/12003372.html
