Can’t figure out

I started vial (10mg/ml) Monday 60 units-Thursday 40 units . I started taking my next vial (25mg/ml) 8mg-32 units. I just checked and found 10mg/ml and it still has some in it😳😡. Rolled behind my butter. Soooo I have racked my brain and been to the calculator. Can’t figure out how much of 10mg-40 units to equal the 25mg 32 units I have been taking. I hope this makes sense. Help and please don’t make me feel stupid. I already do!!