Applied Pharmacology 9, Rate of intravenous drips

Video 9 in the applied pharmacology series, full series is on TH-cam. Intravenous fluids are prescribed in a specified volume over a period of time. E.g. 1 litre of fluid over 8 hours. How do we use these prescriptions to calculate mls to be given per hour and how many drops this means we should set out intravenous drips at.