简便计算+\+u:x9e0v.f:g
32×2.5×12.5+\+u:x9e0v.f:g
算式:提示'R-]'t+B'y.c+\+u:x9e0v.f:g
=5J/O1{+\-F(n;k2}'u(Y-L+\+u:x9e0v.f:g