We look at the division of 85121 by 81 
We want to divide 85121 by 81.

Advancing to step 1:
81 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 81

Going ahead to step 2:
When dividing 85 by 81, we get 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 81 from 85 to get 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 81

On to step 3:
81 can be fit into 41 0 times, resulting in a remainder of 41.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 41 to get 41.
Take the next digit (2) from the dividend and append it to 41, then repeat: 412 / 81

Going ahead to step 4:
If we divide 412 by 81, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 105.0
The remainder is 7 after subtracting 405 from 412.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 81

Step 5:
71 divided by 81 is 0 with a remainder of 71.
The next digit of our result is 0. 
Result so far: 1050.0
Subtracting 0 from 71 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 6:
The number 81 fits into 710 8 times, leaving a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 1050.8
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
If we divide 620 by 81, we get 7 and a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 1050.87
Subtract 567 from 620 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 8:
81 goes into 530 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 1050.876
Deduct 486 from 530 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 9:
If we divide 440 by 81, we get 5 and a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 1050.8765
Subtract 405 from 440 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 10:
81 can be fit into 350 4 times, resulting in a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 1050.87654
If we take 324 away from 350, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 11:
The number 81 fits into 260 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 1050.876543
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
170 divided by 81 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 1050.8765432
If we take 162 away from 170, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
81 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 1050.8765432
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

In conclusion, the division gives 1050.8765432 with a balance of 8e-08.