14×7.6+86×7.6
=（146+86）×7.6
=100×7.6
=760
0.75×10.2
=0.75×10+0.75×0.2
=7.5+0.15
=7.65
0.05×4.39×20
=（0.05×20）×4.39
=1×4.39
=4.39
8.8×1.25
=1.1×（8×1.25）
=1.1×10
=110
6.5×6.39+0.65×36.1
=6.5×6.39+6.5×3.61
=6.5×（6.39+3.61）
=6.5×10
=65
5.66×9.9+0.566
=0.566×99+0.566
=0.566×（99+1）
=0.566×100
=56.6
（4+0.4）×0.25
=4×0.25+0.4×0.25
=1+0.1
=1.1
4×0.4×0.25
=4×（0.4×0.25）
=4×0.1
=0.4
8.8*1.25
=1.1*8*1.25
=1.1*10
=11
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