Add Interpreter ->                               Subtract Interpreter ->
Arg R : ^&LocalState                             Arg R : ^&LocalState 
    T : Tokens                                       T : Tokens 
    A : Variables                                    A : Variables

...                                              ...

/                                                /

Multiply Interpreter ->                          Divide Interpreter ->
Arg R : ^&LocalState                             Arg R : ^&LocalState 
    T : Tokens                                       T : Tokens 
    A : Variables                                    A : Variables

...                                              ...

/                                                /
