$124.99 imes frac{{sqrt[3]{?}}}{{24.99}} + 6.02 imes 8.98 = {(7.99)^2}$

$25 imes frac{{sqrt[3]{?}}}{{sqrt {125} }} + 6 imes 9 = {(8)^2}$

$5 imes sqrt[3]{?} = 64 - 54$

$sqrt[3]{?} = 2 Rightarrow ? = 8$