Thread: сто двадцать на семьдесят

Originally Posted by wonlon

I am trying to imagine to myself how to translate preposition in "Сто двадцать на семьдесят (nominative + на + accusative) here.

I'm not sure but I'd guess that if BP is written as 120/70, then somebody might guess that / sign also means division, so when it's written as 120/70 somebody might see it and say, hey it looks like 120 divided by 70 or in Russian 120 делённое на 70 or simply 120 на 70.
It's my guess it could be very much untrue.