2/9÷5+2/9×1/9+2/9×1/59C,P.\4Z;c4f3w0z8C;t+A
算式：提示2o*|:E6Q9C,P.\4Z;c4f3w0z8C;t+A
=2S-Z;?'o1x,x8O;|.G9C,P.\4Z;c4f3w0z8C;t+A