41又1/3×4/9+51又1/4×4/5+61又/5×5/6 跪求此題的算式與答案,一定要用簡算啊!

41又1/3×4/9+51又1/4×4/5+61又/5×5/6 跪求此題的算式與答案,一定要用簡算啊!

41又1/3×3/4+51又1/4×4/5+61又/5×5/6
=(40+4/3)×3/4+(50+5/4)×4/5+(60+6/5)×5/6
= 30+1+40+1+50+1
=123