计算问题赶快回答,要有计算过程.2.6×99+2.618.5-（5.6+4.8）÷1.3====7.32×4.8+0.52×73.25分之3÷（5分之4+8分之5×15分之2）===0.4×1.25×25×819.5-4.25-5.75===

Question

计算问题赶快回答,要有计算过程.
2.6×99+2.6 18.5-（5.6+4.8）÷1.3
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7.32×4.8+0.52×73.2 5分之3÷（5分之4+8分之5×15分之2）
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0.4×1.25×25×8 19.5-4.25-5.75
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Answer 1

2.6×99+2.6
=2.6*(99+1)
=2.6*100
=260
18.5-（5.6+4.8）÷1.3
=18.5-10.4÷1.3
=18.5-8
=10.5
7.32×4.8+0.52×73.2
=7.32*(4.8+5.2)
=7.32*10
=73.2
5分之3÷（5分之4+8分之5×15分之2）
=3/5÷（4/5+1/12)
=3/5÷（48/60+5/60)
=3/5÷53/60
=36/53
0.4×1.25×25×8
=0.4×25×1.25×8
=10×10
=100
19.5-4.25-5.75
=19.5-(4.25+5.75)
=19.5-10
=9.5