$\cos\left(\frac{2\pi}{3}\right)\cos\left(\frac{3\pi}{4}\right)$
$72.692-41.81$
$x^2\:\cdot x^{-7}$
$\int\sqrt[2]{5+2t}dt$
$t^6+5\:t^6-9$
$\lim_{x\to0}\left(\frac{e^{3x-1}}{x}\right)$
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