We look at the division of 21385144 by 857 
We want to divide 21385144 by 857.

Going ahead to step 1:
When dividing 2 by 857, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 857

Moving on to step 2:
857 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 857

On to step 3:
If we divide 213 by 857, we get 0 and a remainder of 213.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 213 and we're left with 213.
Append the next digit (8) from the dividend to 213 and continue with: 2138 / 857

Advancing to step 4:
The number 857 fits into 2138 2 times, leaving a remainder of 424.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 1714 from 2138 and we're left with 424.
Bring next digit (5) of the dividend behind the 424 and repeat the process: 4245 / 857

Going ahead to step 5:
The number 857 fits into 4245 4 times, leaving a remainder of 817.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 3428 from 4245 and we're left with 817.
Grab the next digit (1) from the dividend, add it to 817, then carry on: 8171 / 857

On to step 6:
857 goes into 8171 9 times with a remainder of 458.
The next digit of our result is 9. 
Result so far: 249.0
The remainder is 458 after subtracting 7713 from 8171.
Include the next digit (4) from the dividend after 458, then repeat: 4584 / 857

Going ahead to step 7:
4584 divided by 857 is 5 with a remainder of 299.
Write down 5 as next digit of the result. 
Result so far: 2495.0
If we take 4285 away from 4584, we end up with 299.
Fetch the next digit (4) from the dividend, attach it to 299 and continue: 2994 / 857

Going ahead to step 8:
857 goes into 2994 3 times with a remainder of 423.
Use 3 as the next digit of our solution. 
Result so far: 24953.0
Subtract 2571 from 2994 to get 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Let's proceed to step 9:
If we divide 4230 by 857, we get 4 and a remainder of 802.
The next digit of our result is 4. 
Result so far: 24953.4
If we take 3428 away from 4230, we end up with 802.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8020, and continue the process.

Step 10:
When dividing 8020 by 857, we get 9 with a remainder of 307.
The number 9 becomes the next digit in our result. 
Result so far: 24953.49
Subtract 7713 from 8020 to get 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

On to step 11:
857 goes into 3070 3 times with a remainder of 499.
Put 3 as the next digit of the answer. 
Result so far: 24953.493
If we subtract 2571 from 3070, we get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

On to step 12:
When dividing 4990 by 857, we get 5 with a remainder of 705.
The number 5 becomes the next digit in our result. 
Result so far: 24953.4935
Subtract 4285 from 4990 to get 705.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7050, and continue the process.

Going ahead to step 13:
857 goes into 7050 8 times with a remainder of 194.
Put 8 as the next digit of the answer. 
Result so far: 24953.49358
Deduct 6856 from 7050 and we're left with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Advancing to step 14:
If we divide 1940 by 857, we get 2 and a remainder of 226.
The number 2 becomes the next digit in our result. 
Result so far: 24953.493582
If we take 1714 away from 1940, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Going ahead to step 15:
2260 divided by 857 is 2 with a remainder of 546.
The number 2 becomes the next digit in our result. 
Result so far: 24953.4935822
The remainder is 546 after subtracting 1714 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

In conclusion, the division gives 24953.4935822 with a balance of 5.46e-06.