11*22+0.22*3300+330*4.4+0.044*55000
问题描述:
11*22+0.22*3300+330*4.4+0.044*55000
快
答
原题=11*22+22*33+33*44+44*55
=11*11*2+11*2*11*3+11*3*11*4+11*4*11*5
=11*11*(2+6+12+20)
=121*40
=4840