（1.）6分之7-(40%+5分之3)×6分之5
原式=7/6-（2/5+3/5）×5/6
=7/6-1×5/6
=7/6-5/6
=1/3
（2.）5分之1×37%+0.63×5分之 1+4.4
原式=1/5×0.37+0.63×1/5+4.4
=1/5（0.37+0.63）+4.4
=1/5+4.4
=0.2+4.4
=4.6