$1005\cdot89$
$\left(15-4\right)+3-\left(12-5\cdot2\right)$
$x-\frac{7}{2}^2$
$2x+2<\sqrt{3}$
$30\cdot30$
$\left(11\cdot t-1\right)^2$
$5^5.2^4.2^2$
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