666211 divided by 81 
Let's see how many times 81 fits into 666211.

Moving on to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 81

On to step 2:
66 divided by 81 is 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Append the next digit (6) from the dividend to 66 and continue with: 666 / 81

Advancing to step 3:
The number 81 fits into 666 8 times, leaving a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 648 from 666 to get 18.
Fetch the next digit (2) from the dividend, attach it to 18 and continue: 182 / 81

Advancing to step 4:
The number 81 fits into 182 2 times, leaving a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 82.0
Subtracting 162 from 182 leaves us with 20.
Grab the next digit (1) from the dividend, add it to 20, then carry on: 201 / 81

Step 5:
If we divide 201 by 81, we get 2 and a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 822.0
Subtract 162 from 201 to get 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 81

Moving on to step 6:
81 goes into 391 4 times with a remainder of 67.
Write down 4 as next digit of the result. 
Result so far: 8224.0
The remainder is 67 after subtracting 324 from 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 7:
When dividing 670 by 81, we get 8 with a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 8224.8
Subtract 648 from 670 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
220 divided by 81 is 2 with a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 8224.82
Deduct 162 from 220 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
81 can be fit into 580 7 times, resulting in a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 8224.827
Subtracting 567 from 580 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 10:
81 can be fit into 130 1 times, resulting in a remainder of 49.
The next digit of our result is 1. 
Result so far: 8224.8271
Subtract 81 from 130 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 11:
If we divide 490 by 81, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 8224.82716
Subtracting 486 from 490 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
When dividing 40 by 81, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 8224.82716
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
When dividing 400 by 81, we get 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 8224.8271604
If we take 324 away from 400, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 14:
If we divide 760 by 81, we get 9 and a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 8224.82716049
Subtracting 729 from 760 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Our division results in 8224.82716049 with a remaining 3.1e-08.