The expression is 

To simplify the expression follow the order of operations: (PEMDAS)

1.     Evaluate the expressions inside Brackets/Parenthesis (P).

2.     Evaluate Powers/Exponents (E).

3.     Multiply and/or Divide in order from left to right (MD).

4.     Add and/or Subtract in order from left to right (AS).

A simple technique for remembering the order pf operations is turned into

phrase“Please Excuse My Dear Aunty Sally” \

In the given expression there are no grouping symbols. So next operation is

evaluating the power.

                    (Evaluate the power: )

Next operation is division.

                            (Divide: )

Next operation is multiplication.

                              (Multiply: )

Next operation is subtraction.

                                         (Subtract: )