When you are creating columns in a list you can opt for a calculated field. With this field you can do calculations depending on other fields. You can multiply, add, divide ... fields with each other.
If you have a monthly wage field, you can automatically calculate the yearly wage by multiplying with 12.
You can use a calculated field on a Yes/no (checkbox) as well. For example if the checkbox is checked you can display "checked", otherwise you can display "unchecked".
This is the formula that you need to use:
That's it for now, hope you can use this one