(3/8)*(3/4)+0.75*5+6.5/(1/13)
= 9/32 + 15/4 + 6.5*13
= 129/32 + 169/2
= 4+0.03125 + 84.5
= 88.53125
简算，求求各位大神了，作业啊。。，小女子，在这谢谢了
(3/8)*(3/4)+0.75*5+6.5/(1/13)
= 9/32 + 15/4 + 6.5*13
= 129/32 + 169/2
= 4+0.03125 + 84.5
= 88.53125