Use the below code to make few basic variables.
Use the below code to get the type of a variable.
Use the below code to change the variable's value to none.
Use the below code to change the variable's value.
Use the below code to add a value to a variable's value.
Use the below code to substract a value from a variable's value.
Use the below code to multiply a variable's value.
Use the below code to divide a variable's value.