Mathematics, Divide, Symbol, Division Sign, Calculation, Arithmetic
This is a "division" symbol, which is usually depicted as a horizontal line with a solid point above and below.
The symbols of different platform designs are not consistent. For most platforms, the solid points in the symbol are round, while the solid points designed by au by KDDI, Docomo, Apple and LG platforms are square. In terms of color, most platforms use gray or black, while au by KDDI, Docomo and emojidex platforms display purple symbols, while Messenger platforms display blue symbols.
The emoji is generally used as an operation symbol in mathematics for dividing numbers. It can also mean removal, elimination, calculation, arithmetic, etc.