We're dividing 134271 by 21 
We want to figure out the number of times 134271 can be divided by 21.

Advancing to step 1:
21 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 21

Moving on to step 2:
21 can be fit into 13 0 times, resulting in a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 21

Step 3:
21 goes into 134 6 times with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 126 from 134, we get 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 21

On to step 4:
21 goes into 82 3 times with a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 63.0
Subtract 63 from 82 to get 19.
Fetch the next digit (7) from the dividend, attach it to 19 and continue: 197 / 21

On to step 5:
If we divide 197 by 21, we get 9 and a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 639.0
If we take 189 away from 197, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 21

Advancing to step 6:
21 goes into 81 3 times with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 6393.0
The remainder is 18 after subtracting 63 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
21 goes into 180 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 6393.8
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
The number 21 fits into 120 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 6393.85
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 6393.857
If we subtract 147 from 150, 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.

Let's proceed to step 10:
21 goes into 30 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 6393.8571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
If we divide 90 by 21, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 6393.85714
Subtract 84 from 90 to 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.

Step 12:
If we divide 60 by 21, we get 2 and a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 6393.857142
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.

On to step 13:
180 divided by 21 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 6393.8571428
The remainder is 12 after subtracting 168 from 180.
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 14:
When dividing 120 by 21, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 6393.85714285
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.

The quotient of the division is 6393.85714285, and the remainder is 1.5e-08.