$2+3+20+30+16$
$\frac{d}{dx}2^{e^{x+1}}$
$49x^2+14x-1$
$\frac{3x^{8}y^{3}}{9x^{6}y^{8}}$
$90\cdot19$
$\frac{3}{2}^4\frac{1}{2}^40.5^4$
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