a: \(\left(-2\right)\cdot\left(-6\right)^2+3\cdot\left(-2\right)^3-62\)
\(=-2\cdot36+3\cdot\left(-8\right)-62\)
=-72-24-62
=-158
b: \(\left(-6\right)\cdot4\cdot\left(-7\right)\cdot\left(-25\right)\)
\(=-6\cdot7\cdot4\cdot25\)
\(=-42\cdot100=-4200\)
c: \(\left(-85\right)+\left(-105\right)+62\)
\(=-\left(85+105\right)+62\)
=-190+62
=-128
d: \(24\cdot\left(-15\right)+\left(-15\right)\cdot75+15\)
\(=15\left(-24-75+1\right)\)
\(=15\cdot\left(-100\right)=-1500\)
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