64137 ÷ 20 
Our goal is to divide 64137 by 20.

Step 1:
20 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 20

Step 2:
20 goes into 64 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 60 from 64 leaves us with 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 20

Going ahead to step 3:
20 goes into 41 2 times with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we take 40 away from 41, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 20

Moving on to step 4:
13 divided by 20 is 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 320.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 20

Going ahead to step 5:
When dividing 137 by 20, we get 6 with a remainder of 17.
The next digit of our result is 6. 
Result so far: 3206.0
If we take 120 away from 137, 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.

On to step 6:
20 can be fit into 170 8 times, resulting in a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 3206.8
Subtracting 160 from 170 leaves us 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.

Let's proceed to step 7:
The number 20 fits into 100 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 3206.85
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.

Step 8:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3206.85
The remainder is 0 after subtracting 0 from 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 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3206.85
If we subtract 0 from 0, 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.

The quotient of the division is 3206.85, and the remainder is 0.0.