11.8*43-860*0.09

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11.8*43-860*0.0911.8*43-860*0.0911.8*43-860*0.0911.8*43-860*0.09=11.8*43-43*1.8=43*(11.8-1.8)=43*10=

11.8*43-860*0.09
11.8*43-860*0.09

11.8*43-860*0.09
11.8*43-860*0.09
=11.8*43-43*1.8
=43*(11.8-1.8)
=43*10
=430

11.8*43-860*0.09
=11.8*43-86*0.9
=11.8*43-43*1.8
=43*(11.8-1.8)
=43*10
=430

11.8*43-860*0.09
=11.8*43-43*20*0.09
=11.8*43-43*1.8
=(11.8-1.8)*43
=10*43
=430