3×7×5+10×569×6÷150+75

=(3×7×5)+(10×569×6÷150)+75
=105+227,6+75
=407,6

3×7×5+10×569÷150+75=21×5+10×569÷150+75
= 105+10×569÷150+75
=105+5690÷150+75
=150+37,94+75
=187,94+75
=262,94





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