$\lim_{x\to0}\left(\frac{1-\left(\cos\left(x\right)\right)}{e^x-1}\right)$
$-7\cdot\left(4-6\right)$
$\int\left(9x-3\right)^3xdx$
$w=\frac{xy}{z}$
$\tan x\left(\csc x+1\right)=\frac{1+\sin x}{\cos x}$
$9xyz=9\cdot x\cdot y\cdot z$
$120\cdot5.9$
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