123456789*987654321-123456788*987654322=多少简便计算脱式

问题描述:

123456789*987654321-123456788*987654322=多少简便计算脱式

123456789*987654321-123456788*987654322=(123456788+1)*987654321-123456788*(987654321+1)
=987654321-123456788
=864197533