668226 ÷ 81 
Let's see how many times 81 fits into 668226.

On to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 81

Going ahead to step 2:
The number 81 fits into 66 0 times, leaving a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Take the next digit (8) from the dividend and append it to 66, then repeat: 668 / 81

Step 3:
81 goes into 668 8 times with a remainder of 20.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 648 from 668 leaves us with 20.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 81

Going ahead to step 4:
If we divide 202 by 81, we get 2 and a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 82.0
If we subtract 162 from 202, we get 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 81

Let's proceed to step 5:
81 can be fit into 402 4 times, resulting in a remainder of 78.
Use 4 as the next digit of our solution. 
Result so far: 824.0
Subtracting 324 from 402 leaves us with 78.
Take the next digit (6) from the dividend and append it to 78, then repeat: 786 / 81

Going ahead to step 6:
If we divide 786 by 81, we get 9 and a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 8249.0
If we subtract 729 from 786, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 7:
570 divided by 81 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 8249.7
Deduct 567 from 570 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
30 divided by 81 is 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 8249.7
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
300 divided by 81 is 3 with a remainder of 57.
The next digit of our result is 3. 
Result so far: 8249.703
Subtracting 243 from 300 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 10:
The number 81 fits into 570 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 8249.7037
If we take 567 away from 570, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 11:
The number 81 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 8249.7037
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
The number 81 fits into 300 3 times, leaving a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 8249.703703
Deduct 243 from 300 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 13:
81 can be fit into 570 7 times, resulting in a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 8249.7037037
Deduct 567 from 570 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 14:
If we divide 30 by 81, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 8249.7037037
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final result is 8249.7037037 with a remainder of 3e-08.