Ideally doctors and drug companies make dispensing drugs as idiot proof as possible. As in my first example.
If you ever find yourself having to do a complex math equation, give 1/3, or 6 and 3/8 of a tablet STOP. Either the order is wrong or you've pulled the wrong drug.
Also it is very rare, as in never happens, that you need to give more than two of the same medication at the same time.
If a pill comes is 300 mg, and the order is for 1500 mg....yikes, triple check with the doctor, and, or find out if the pill is available in 500 mg tablets because something is wrong.
Your question is brilliant. Probably 3/8
, of your classmates have the same question but are embarrassed to ask.