$5xy+3x+4xy$
$\frac { ( x + 2 ) ^ { 3 } } { x + 2 }$
$54x^4\cdot y-16x y^4$
$\int5\cos\left(2x\right)dx$
$\frac{a}{6}+13=20$
$45\cdot2+45\cdot2+15\cdot2+45\cdot2+2\:14\cdot2+11\cdot2$
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