21142 divided by 17 
Let's see how many times 17 fits into 21142.

Advancing to step 1:
17 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 17

On to step 2:
17 can be fit into 21 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 17 from 21 to get 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 17

Step 3:
The number 17 fits into 41 2 times, leaving a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtract 34 from 41 to get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 17

On to step 4:
If we divide 74 by 17, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 124.0
If we subtract 68 from 74, we get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 17

Advancing to step 5:
If we divide 62 by 17, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 1243.0
Subtract 51 from 62 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 6:
110 divided by 17 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 1243.6
The remainder is 8 after subtracting 102 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
The number 17 fits into 80 4 times, leaving a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 1243.64
If we take 68 away from 80, we end up 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.

Advancing to step 8:
If we divide 120 by 17, we get 7 and a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 1243.647
Deduct 119 from 120 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
When dividing 10 by 17, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 1243.647
If we subtract 0 from 10, 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.

Let's proceed to step 10:
If we divide 100 by 17, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 1243.64705
The remainder is 15 after subtracting 85 from 100.
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 11:
The number 17 fits into 150 8 times, leaving a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 1243.647058
Subtracting 136 from 150 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 12:
17 goes into 140 8 times with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 1243.6470588
Subtract 136 from 140 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 1243.6470588 with a balance of 4e-08.