I swim:
-10 months out of a year = 43 weeks out of a year
-2 hours on Monday, Thursday, and Friday
-4 hours on Wednesday
-1.5 hours on Tuesday and Saturday
Monday: 2 hrs
Tuesday: 1.5 hrs
Wednesday: 4 hrs
Thursday: 2 hrs
Friday: 2 hrs
Saturday: 1.5 hrs
Sunday: 0 hrs
Total: 13 hours in a week
If you swim 13 hours in a week for 43 weeks, that is
13 hours, done 43 times
13 * 43 = 559 hours