（8.8 - 23.4×1/3）÷5/9;D-B-E,{3w9S,g
算式：提示,e/V'w4x:G'm-_+g5g'{;D-B-E,{3w9S,g
=5p)l+O9j8d0Y*i0l6m,H6f/E2h;d.o;D-B-E,{3w9S,g