How do you use the Memory on a casio fx-82MS?

To use the memory on a Casio fx-82MS, you can store a number by pressing the "STO" key followed by a memory key (M1, M2, etc.). To recall a stored number, press the "RCL" key followed by the same memory key. You can also clear the memory by pressing "SHIFT," then "CLR," and selecting the appropriate memory option. This allows you to efficiently store and retrieve values during calculations.