We divide 637563 by 20
We want to figure out the number of times 637563 can be divided by 20.

Moving on to step 1:
20 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 20

Step 2:
The number 20 fits into 63 3 times, leaving a remainder of 3.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 60 from 63 to get 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 20

Going ahead to step 3:
20 goes into 37 1 times with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Deduct 20 from 37 and we're left with 17.
Fetch the next digit (5) from the dividend, attach it to 17 and continue: 175 / 20

Moving on to step 4:
If we divide 175 by 20, we get 8 and a remainder of 15.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
The remainder is 15 after subtracting 160 from 175.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 20

Step 5:
If we divide 156 by 20, we get 7 and a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 3187.0
If we take 140 away from 156, we end up with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 20

On to step 6:
163 divided by 20 is 8 with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 31878.0
If we subtract 160 from 163, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
If we divide 30 by 20, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 31878.1
If we take 20 away from 30, 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.

Going ahead to step 8:
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: 31878.15
If we subtract 100 from 100, we get 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: 31878.15
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.

Advancing to step 10:
20 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 31878.15
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.

The final result is 31878.15 with a remainder of 0.0.