The sum of 712 plus 518 is 1230
3 + 712 = 715
712 + 310 = 1022
They add up to: 737
15 hours 5.5 minutes.
8hours 15 minutes
5 hour 30 minutes
712
5 minutes 51 seconds.
13 hours and 15 minutes.
11:15
8minutes 32seconds + 37minutes 18 seconds + 15 seconds