How to use left floor(⌊) symbol in LaTeX?

Symbol/Unicode	Left Floor/U+230A
Type of symbol	Mathematics
Package (requirement)	No
Argument	No
Latex command	`\lfloor`
Example	`\lfloor` → ⌊

You need to use the \lfloor command to print the Left Floor symbol in a latex document.

\documentclass{article}
\begin{document}
   \[ \lfloor \frac{x}{n} \rfloor + \lfloor \frac{m+x}{n} \rfloor \]
   \[ \lfloor \frac{x+1}{x+7} \rfloor = \lfloor \frac{x}{x+3} \rfloor \]
   \[ \left\lfloor x \right\rfloor + \left \lceil -x \right \rceil = 0 \]
\end{document}

Output :