简便计算两道，我怎么也想不出来！跪求学霸解决！详见下方

1.3✖️83➕0.26✖️85
=1.3x83+2.6x8.5
=1.3x83+1.3x2x8.5
=1.3x(83+17)
=1.3x100
=130
3.6✖️58➕1.8✖️96➖7.2✖️53
=3.6x58+1.8x2x48-3.6x2x53
=3.6x(58+48-106)
=3.6x0
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