$1+csc^2x\:cos^2x=csc^2x$
$22^2-3-13+45$
$e^{1t}sin\left(3t\right)$
$x+2+3+y+z-4+x+2+y+3+z-4$
$\int\left(3x\left(x^2+2\right)^5\right)dx$
$a+7^2$
$1400\cdot981\cdot18$
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