1/2+0.45÷0.9 - 5/8.x:w,h'@6b0G
算式:提示/}4y0p3m;A6K9M3~)[;j8_8x1P.x:w,h'@6b0G
=1 -5/8 =4i:z5k+r0t4g(y7o.x:w,h'@6b0G