Simplify \({120}^{2}\) to \(14400\).
\[0\times 120+\frac{3\times 14400}{2}\]
Simplify \(3\times 14400\) to \(43200\).
\[0\times 120+\frac{43200}{2}\]
Simplify \(0\times 120\) to \(0\).
\[0+\frac{43200}{2}\]
Simplify \(\frac{43200}{2}\) to \(21600\).
\[0+21600\]
Simplify.
\[21600\]
21600
