33.33(2012个3)乘以33.34(2011个3)

问题描述:

33.33(2012个3)乘以33.34(2011个3)

33.33(2012个3)乘以33.34(2011个3)
=3乘以11.11(2012个1)乘以33.34(2011个3)【将乘数拆分】
=3乘以33.34(2011个3)乘以11.11(2012个1)【交换第2第3个乘数】
=100...002(2011个0)乘以11.11(2012个1)
= 11...1122...22(其中2012个1,2012个2)3乘以33......34(2011个3)乘以11.....11(2012个1)【交换第2第3个乘数】
这个怎么理解????