计算：+D2T4?;w5B8f
987-178-222-390+D2T4?;w5B8f
算式：提示*M*K;H3D;p9l6f+D2T4?;w5B8f
=;t0A;L:W:O8l;m:P'`8r)e+D2T4?;w5B8f