1.23×9.1+0.77×9.4=1.23x9.1+0.77x9.1+0.77x0.3=9.1x(1.23+0.77)+0.231=9.1x2+0.231=18.2+0.231=18.431
5.6×37+56×6.52=5.6×37+5.6×65.2=5.6×37+5.6×63+5.6×2.2=5.6×（37+63）+12.32=5.6×100+12.32=560+12.32=572.32
