We're dividing 21526742 by 857 
We want to divide 21526742 by 857.

On to step 1:
857 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 857

Advancing to step 2:
When dividing 21 by 857, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 857

On to step 3:
When dividing 215 by 857, we get 0 with a remainder of 215.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 215 leaves us with 215.
Fetch the next digit (2) from the dividend, attach it to 215 and continue: 2152 / 857

Let's proceed to step 4:
857 can be fit into 2152 2 times, resulting in a remainder of 438.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1714 from 2152, we get 438.
Grab the next digit (6) from the dividend, add it to 438, then carry on: 4386 / 857

Moving on to step 5:
When dividing 4386 by 857, we get 5 with a remainder of 101.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Deduct 4285 from 4386 and we're left with 101.
Take the next digit (7) from the dividend and append it to 101, then repeat: 1017 / 857

Going ahead to step 6:
857 goes into 1017 1 times with a remainder of 160.
The number 1 becomes the next digit in our result. 
Result so far: 251.0
If we subtract 857 from 1017, we get 160.
Grab the next digit (4) from the dividend, add it to 160, then carry on: 1604 / 857

Moving on to step 7:
857 goes into 1604 1 times with a remainder of 747.
The number 1 becomes the next digit in our result. 
Result so far: 2511.0
Deduct 857 from 1604 and we're left with 747.
Include the next digit (2) from the dividend after 747, then repeat: 7472 / 857

On to step 8:
857 goes into 7472 8 times with a remainder of 616.
Put 8 as the next digit of the answer. 
Result so far: 25118.0
If we take 6856 away from 7472, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Step 9:
When dividing 6160 by 857, we get 7 with a remainder of 161.
Use 7 as the next digit of our solution. 
Result so far: 25118.7
If we take 5999 away from 6160, we end up with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Step 10:
857 can be fit into 1610 1 times, resulting in a remainder of 753.
Write down 1 as next digit of the result. 
Result so far: 25118.71
Deduct 857 from 1610 and we're left with 753.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7530, and continue the process.

Advancing to step 11:
7530 divided by 857 is 8 with a remainder of 674.
Record the quotient 8 as the next digit in the result. 
Result so far: 25118.718
Subtracting 6856 from 7530 leaves us with 674.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6740, and continue the process.

On to step 12:
The number 857 fits into 6740 7 times, leaving a remainder of 741.
The next digit of our result is 7. 
Result so far: 25118.7187
If we take 5999 away from 6740, we end up with 741.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7410, and continue the process.

Moving on to step 13:
When dividing 7410 by 857, we get 8 with a remainder of 554.
Use 8 as the next digit of our solution. 
Result so far: 25118.71878
If we subtract 6856 from 7410, we get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 14:
5540 divided by 857 is 6 with a remainder of 398.
Use 6 as the next digit of our solution. 
Result so far: 25118.718786
If we take 5142 away from 5540, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Moving on to step 15:
857 can be fit into 3980 4 times, resulting in a remainder of 552.
Use 4 as the next digit of our solution. 
Result so far: 25118.7187864
Subtracting 3428 from 3980 leaves us with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

On to step 16:
857 can be fit into 5520 6 times, resulting in a remainder of 378.
Record the quotient 6 as the next digit in the result. 
Result so far: 25118.71878646
The remainder is 378 after subtracting 5142 from 5520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Our division results in 25118.71878646 with a remaining 3.78e-07.