计算：:|)w+S4s1C*i7j1@.O
321×654÷987÷654×987÷321:|)w+S4s1C*i7j1@.O
算式：提示/n,M5M'~7y/Z)x8U7T:|)w+S4s1C*i7j1@.O
=4w)N4V:n+g:|)w+S4s1C*i7j1@.O