Calculate pay for normal hours, time-and-a-half and double-time.

Calculate weekly, fortnightly and monthly pay from a given salary.
=A1/52 (for weekly)
=A1/26 (for fortnightly)
=A1/12 (for monthly)
where A1 is the salary (per annum)

Calculate weekly wage given hours worked and hourly rate.
=B2*C2
where B2 is the hours worked and C2 is the hourly rate
