0:00:00.004,0:00:03.718
So let's try an example. Suppose we wanted to find the days between dates. 2013
0:00:03.718,0:00:08.686
Janurary 24, and 2013 June 29th. If we were going to do this as a human we might
0:00:08.686,0:00:13.366
look at a calendar. I happen to have a calendar handy and thanks to my auntie in
0:00:13.366,0:00:17.086
Belfast for sending me the calendar and we could count the days using the
0:00:17.086,0:00:22.463
calendar so let's look at the calendar. We have our starting day is January 24
0:00:22.463,0:00:27.581
and we might count the days between January 24. How many do we have left in
0:00:27.581,0:00:32.701
January. So there would be 1,2, 3, 4, 5, 6, 7 days left in January. So there'd
0:00:32.701,0:00:37.890
be seven days in January. Then we have, have all of February, all of February is
0:00:37.890,0:00:46.209
28 days. Then we have all of March, 31 days. All of April, 30 days. All of May,
0:00:46.209,0:00:52.367
31 days. And then we have June. We don't want to count all of June because we
0:00:52.367,0:00:58.132
are stopping on June 29th, so we are going to add 29 days. From June, and if we
0:00:58.132,0:01:03.206
sum all those up we should get our answer. And as a human we know how to compute
0:01:03.206,0:01:07.072
sums by entering sums into Google, and we get 156.