320689 divided by 15 
Our goal is to divide 320689 by 15.

Let's proceed to step 1:
The number 15 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 15

Advancing to step 2:
15 goes into 32 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 2 after subtracting 30 from 32.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 15

Step 3:
15 can be fit into 20 1 times, resulting in a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
If we take 15 away from 20, we end up with 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 15

Let's proceed to step 4:
15 goes into 56 3 times with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 213.0
If we subtract 45 from 56, we get 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 15

Advancing to step 5:
When dividing 118 by 15, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 2137.0
If we take 105 away from 118, we end up with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 15

Step 6:
If we divide 139 by 15, we get 9 and a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 21379.0
If we take 135 away from 139, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
40 divided by 15 is 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 21379.2
If we subtract 30 from 40, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 21379.26
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 21379.266
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 21379.266 with a remaining 0.001.