(12x*12x)+30xy-18x
(x^2y^2)^2
-2 1/3+4 3/3
35% of 40
(3x^4)^4
-8/19+-2/57
-3/11+5/9
d-90.9=909.09
(3-f)(7f+5)
$21^{2^4^8}\sqrt{16}$
