We divide 39597 by 20
We want to figure out the number of times 39597 can be divided by 20.

On to step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 20

Step 2:
20 goes into 39 1 times with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 20 from 39 and we're left with 19.
Grab the next digit (5) from the dividend, add it to 19, then carry on: 195 / 20

Advancing to step 3:
20 goes into 195 9 times with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we take 180 away from 195, we end up with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 20

Going ahead to step 4:
20 goes into 159 7 times with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 197.0
The remainder is 19 after subtracting 140 from 159.
Include the next digit (7) from the dividend after 19, then repeat: 197 / 20

Advancing to step 5:
20 can be fit into 197 9 times, resulting in a remainder of 17.
The next digit of our result is 9. 
Result so far: 1979.0
If we take 180 away from 197, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 6:
20 can be fit into 170 8 times, resulting in a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 1979.8
If we subtract 160 from 170, 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.

Step 7:
When dividing 100 by 20, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1979.85
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1979.85
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1979.85
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 1979.85 with a remaining 0.0.