I’m not too good at math either, but I have my trusty calculator. Say your rent is $750 a month (or for @mcbealer perhaps pounds, since you used the term “maths” instead of “math” which makes me think you might be from some sort of Britishy place. :) But I’ll use dollars because it’s easier for me).
$750 a month rent is $9000.00 a year or about $24.6575343465824.66 dollars a day which I will round up to $24.66 a day (equalling $9000.90 a year)
That makes your rent
$25.00 a day for 30 month days
$24.19 a day for 31 month days
26.79 a day for a non-leap year February
25.86 a day for a leap year February
I think it all evens out. Anyway, most nice, decent, places at least houses and apartments or flats, charge by the month, not the week, the day or, god forbid, by the hour. :) Stay a way from those places.