$45.32\cdot7.8$
$-11-10-10-5-5$
$2\cdot2\cdot3\cdot3\cdot5\cdot17$
$16y^4-40y^2+25$
$\left(\frac{9}{5}mp^2\right)\left(-15m^6p\right)$
$10-20+30-40+50-6g$
$\frac{\csc\left(b\right)}{\tan\left(b\right)+\cot\left(b\right)}=\cos\left(b\right)$
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