We look at the division of 21671031 by 852 
We're looking to find how many times 852 goes into 21671031.

Advancing to step 1:
When dividing 2 by 852, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 852

Advancing to step 2:
The number 852 fits into 21 0 times, leaving a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 852

Step 3:
852 can be fit into 216 0 times, resulting in a remainder of 216.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 216, we end up with 216.
Grab the next digit (7) from the dividend, add it to 216, then carry on: 2167 / 852

Going ahead to step 4:
2167 divided by 852 is 2 with a remainder of 463.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 463 after subtracting 1704 from 2167.
Bring next digit (1) of the dividend behind the 463 and repeat the process: 4631 / 852

Going ahead to step 5:
When dividing 4631 by 852, we get 5 with a remainder of 371.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtracting 4260 from 4631 leaves us with 371.
Fetch the next digit (0) from the dividend, attach it to 371 and continue: 3710 / 852

Going ahead to step 6:
The number 852 fits into 3710 4 times, leaving a remainder of 302.
The next digit of our result is 4. 
Result so far: 254.0
Subtracting 3408 from 3710 leaves us with 302.
Include the next digit (3) from the dividend after 302, then repeat: 3023 / 852

Moving on to step 7:
When dividing 3023 by 852, we get 3 with a remainder of 467.
Put 3 as the next digit of the answer. 
Result so far: 2543.0
Subtract 2556 from 3023 to get 467.
Append the next digit (1) from the dividend to 467 and continue with: 4671 / 852

On to step 8:
If we divide 4671 by 852, we get 5 and a remainder of 411.
Put 5 as the next digit of the answer. 
Result so far: 25435.0
Deduct 4260 from 4671 and we're left with 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

Going ahead to step 9:
4110 divided by 852 is 4 with a remainder of 702.
The next digit of our result is 4. 
Result so far: 25435.4
The remainder is 702 after subtracting 3408 from 4110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Advancing to step 10:
When dividing 7020 by 852, we get 8 with a remainder of 204.
The next digit of our result is 8. 
Result so far: 25435.48
If we subtract 6816 from 7020, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 11:
2040 divided by 852 is 2 with a remainder of 336.
Write down 2 as next digit of the result. 
Result so far: 25435.482
Deduct 1704 from 2040 and we're left with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

On to step 12:
When dividing 3360 by 852, we get 3 with a remainder of 804.
Write down 3 as next digit of the result. 
Result so far: 25435.4823
If we subtract 2556 from 3360, we get 804.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8040, and continue the process.

Going ahead to step 13:
The number 852 fits into 8040 9 times, leaving a remainder of 372.
Write down 9 as next digit of the result. 
Result so far: 25435.48239
The remainder is 372 after subtracting 7668 from 8040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 14:
The number 852 fits into 3720 4 times, leaving a remainder of 312.
Put 4 as the next digit of the answer. 
Result so far: 25435.482394
The remainder is 312 after subtracting 3408 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Step 15:
852 goes into 3120 3 times with a remainder of 564.
Record the quotient 3 as the next digit in the result. 
Result so far: 25435.4823943
If we take 2556 away from 3120, we end up with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

On to step 16:
If we divide 5640 by 852, we get 6 and a remainder of 528.
The next digit of our result is 6. 
Result so far: 25435.48239436
If we take 5112 away from 5640, we end up with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

In conclusion, the division gives 25435.48239436 with a balance of 5.28e-07.