Let's change the mg to dollar. Would you rather have .025 of a dollar or .75 of a dollar. I'd take 75 cents any day.
125 is more than 075, so 125 mg is more than 075 mg.
yes, a milileter is more than a miligram
that is an idiot question. 7.5 is definitely bigger than 1
no 1/4 (.25) is not great then 2/4 (.5).