This is LaTeX code:

[latex]
A=\{ (x_1, x_2, x_3, x_4, x_5) \in \mathbb{R}^5: & x_1, x_2, x_3, x_4, x_5 \in \mathbb{Z}, \hspace{2 mm} x_1 \cdot x_2 \cdot x_3 \cdot x_4 \cdot x_5 = -16200 \}
[/latex]