Let's divide 137472 by 21
We want to divide 137472 by 21.

Advancing to step 1:
If we divide 1 by 21, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 21

Moving on to step 2:
21 can be fit into 13 0 times, resulting in a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 21

Moving on to step 3:
When dividing 137 by 21, we get 6 with a remainder of 11.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 126 from 137 leaves us with 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 21

Going ahead to step 4:
The number 21 fits into 114 5 times, leaving a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 65.0
The remainder is 9 after subtracting 105 from 114.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 21

Let's proceed to step 5:
21 goes into 97 4 times with a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 654.0
Deduct 84 from 97 and we're left with 13.
Append the next digit (2) from the dividend to 13 and continue with: 132 / 21

Going ahead to step 6:
The number 21 fits into 132 6 times, leaving a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 6546.0
Subtracting 126 from 132 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 6546.2
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
The number 21 fits into 180 8 times, leaving a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 6546.28
Subtracting 168 from 180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
21 can be fit into 120 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 6546.285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 6546.2857
Subtract 147 from 150 to 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 11:
When dividing 30 by 21, we get 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 6546.28571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 12:
90 divided by 21 is 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 6546.285714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
60 divided by 21 is 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 6546.2857142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 14:
If we divide 180 by 21, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 6546.28571428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 6546.28571428 with a remainder of 1.2e-08.