00:01
So here we have 521 over 15 and we need to round it and truncate it.
00:05
But how are we supposed to do that when it's a fraction? we need a decimal.
00:09
So what we're going to do is long division.
00:13
The thing is we don't have to keep going until we finish the whole decimal.
00:18
We just have to get to the fourth decimal place since we're rounding to the third decimal place and we have to see what's in the fourth decimal place because it's important in our rounding process.
00:28
So let's start dividing.
00:31
15 can't go into 5, but it can go into 52, three times.
00:36
So we have 45.
00:40
52 minus 45 gives us 7.
00:42
15 can't go into 7.
00:44
So we'll bring down our 1.
00:46
15 goes into 71, four times.
00:49
That gives us 60.
00:51
Then we get 11.
00:53
15 can't go into 11.
00:54
So now we're going to add a 0 and a point here.
01:00
And then bring down a zero, we have 110.
01:03
15 goes into 110, 7 times.
01:07
15 times 7 is 105.
01:12
Now we get 5.
01:14
We're going to bring down another 0, and we get 50.
01:20
15 goes into 53 times.
01:23
That gives us 45...