A simple in game calculator plugin for MCDReforged >= 2.1.0
Requires simpleeval module
Configure file: config/simple_calculator/config.json
It will calculate the expression with an extra prefix == such as ==1+1. All unrelated chars will be ignored
Try input ==3**4-(1+3.0) or ==sin(0.5*pi) + (0x1A >> 1) in game chat and that's it