计算.R2c(X6S
3280÷16=.^5Z;I5P'K.j)Y.R2c(X6S
23×16=+|6Y/M2`,z5n,y.R2c(X6S
205×10=)v+N,z)?']7];T+u.R2c(X6S
625－368=4D-F(B8Y'a*[7e7c6D:M8S4P5U7q7]3}.R2c(X6S
6000－2050=5@6Q'S3`:E/m-N.R2c(X6S
1028÷257=.D6v/E+K7A5\6L;~.R2c(X6S