8 ÷ 9 ÷ 8 × 1

8 ÷ 9 + 8 × 1 = 8.88888888889

1. Parentheses

2. Exponents

3. Multiplication and Division

4. Addition and Subtraction

This means that you should do what is possible within parentheses first, then exponents, then multiplication and division (from left to right), and then addition and subtraction (from left to right). If parentheses are enclosed within other parentheses, work from the inside out.