$\lim_{x\to1}\left(\frac{\sin\left(3x\right)}{\tan\left(4x\right)}\right)$
$2269\cdot1855\cdot105$
$4^3\:.4^{-3}$
$-19+368-48$
$\int t^2e^{-12t}dt$
$x+4+x+4+x+4$
$15-27:\left(1+2\cdot4\right)-3\cdot\left(-1\right)$
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