7 and a half hours
(7+12k) hours where k is an integer.
630/7 = 90 so there are 90 7s in 630
From 7:30 to 6:30, there are 11 hours. If you count from 7:30 AM to 6:30 PM, it is a span of 11 hours.
There are 7 hours between 7 am to 2pm
90
There are 7 hours between 7 am to 2pm
From 6:30 AM to 7:30 PM is a total of 13 hours. This is calculated by finding the difference between the two times, which includes the full hours from 6:30 AM to 6:30 PM (12 hours) plus an additional hour from 6:30 PM to 7:30 PM.
1 week = 7 days90 weeks = 630 days
There are 17 hours between 2 am and 7 pm.
0.0111
There are 7 hours between 7 am to 2pm