All you need to do is multiply 3 x 7 to get the number of days.
there are 560 days in 80 weeks
Four weeks and five days.
126 days is 18 weeks.
There are 5 weeks in 35 days.
There are 175 days in 25 weeks.
There are 420 days in 60 weeks.
77 days = 11 weeks
Eight weeks.
There are 784 days in 112 weeks.
There are 13 weeks in 91 days.
There are 196 days in 28 weeks.
90 days is 12 weeks and 6 days.