$4^a^2\cdot5^a^3$

$\frac{dy}{dx}=\frac{x\left(y-2\right)-3y+6}{x\left(y+3\right)+y+3}$

$-\frac{1236}{8}-\frac{56}{5}+23+36.487+\frac{781}{4}-56$

$\int_0^{10}\left(e^{-x}\right)\left(\left(-4.5+0.5x+5e^x\right)-\left(25-5x-0.25x^2\right)\right)dx$

$\int_{-\infty\:}^{6.44}0,19947\cdot e^{-\frac{x^2}{8}}dx$

$\frac{dx}{dt}+x=sin\left(5t\right)$

$5\left(2+8\right)$