Divide annual salary by 52.18 = weekly rate
Divide weekly rate by 37.5 = hourly rate
Multiply hourly rate by 2 = Time x 2
For example, if the annual salary is equal to €56,762
Divide €56,762 by 52.18 = €1,088
Divide €1,088 by 37.5 = €29
Multiply €29 by 2 = €58