爱因斯坦台阶问题：有人走一台阶，若每步走两级则最后剩一级；若每步走三

(66号) 级则最后剩两级；若每步走四级则最后剩三级；若每步走五级则最后剩四级；若每步走六级则最后剩五级；若每步走七级则刚好不剩，问台阶共有几级

-Einstein step problem: Some people take a step, if each step taking two of the last remaining one　if each step had to walk three (66) level of the last remaining two　if each step taking four of the last remaining three　 if each step taking five of the last left 4　if each step is the last left to go 6 5　if each step is just not left to go seven, and asked the grade level there