Constructing your own formula

In order to practice creating a formula, try the following: 

1. Think of an integer (whole) number. (For checking purposes it is probably advisable to make it less than 100.)
2. Enter a calculation in E3 that will carry out all the following steps

•  add 20 to the number you thought of
•  multiply the result by 4
• subtract 8 from the result
• divide that result by 2
• subtract twice the number you thought of 

The answer should be 36. If it isn’t, check your formula, paying particular attention to the brackets, and edit it as necessary.