（1/9-1/12）×4×9;j(d;f+f,Y9F/U
算式：提示5l9\4l;_+V(|6n:m/Y9K;j(d;f+f,Y9F/U
=*m4e-E0k9a.~0S8l1i(s9?(~;j(d;f+f,Y9F/U