2.120. $\frac{5 \sqrt[3]{4 \sqrt[3]{192}}+7 \sqrt[3]{18 \sqrt[3]{81}}}{\sqrt[3]{12 \sqrt[3]{24}+6 \sqrt[3]{375}}}$.

2.120. $\frac{5 \sqrt[3]{4 \sqrt[3]{192}}+7 \sqrt[3]{18 \sqrt[3]{81}}}{\sqrt[3]{12 \sqrt[3]{24}+6 \sqrt[3]{375}}}$.

The expression is already in a mathematical format and does not require translation. However, if you need an explanation or simplification of the expression, please let me know!