计算：*X*M6q5m5o(l(k
19931993×1993-19931992×1992-19931992*X*M6q5m5o(l(k
算式：提示;y6h)g.u)C/X*X*M6q5m5o(l(k
=6f0R:j5k6f(p,i)c4@4\*Y*X*M6q5m5o(l(k