660445 ÷ 81 
Let's see how many times 81 fits into 660445.

Advancing to step 1:
81 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 81

Moving on to step 2:
81 goes into 66 0 times with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Include the next digit (0) from the dividend after 66, then repeat: 660 / 81

On to step 3:
The number 81 fits into 660 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 12 after subtracting 648 from 660.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 81

Advancing to step 4:
If we divide 124 by 81, we get 1 and a remainder of 43.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
Deduct 81 from 124 and we're left with 43.
Append the next digit (4) from the dividend to 43 and continue with: 434 / 81

Step 5:
The number 81 fits into 434 5 times, leaving a remainder of 29.
The number 5 becomes the next digit in our result. 
Result so far: 815.0
If we take 405 away from 434, we end up with 29.
Bring next digit (5) of the dividend behind the 29 and repeat the process: 295 / 81

Moving on to step 6:
When dividing 295 by 81, we get 3 with a remainder of 52.
Put 3 as the next digit of the answer. 
Result so far: 8153.0
Deduct 243 from 295 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 7:
If we divide 520 by 81, we get 6 and a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 8153.6
Deduct 486 from 520 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
81 goes into 340 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 8153.64
If we take 324 away from 340, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
If we divide 160 by 81, we get 1 and a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 8153.641
Deduct 81 from 160 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 10:
81 can be fit into 790 9 times, resulting in a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 8153.6419
Deduct 729 from 790 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 11:
610 divided by 81 is 7 with a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 8153.64197
The remainder is 43 after subtracting 567 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 12:
430 divided by 81 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 8153.641975
Subtract 405 from 430 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 13:
81 goes into 250 3 times with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 8153.6419753
If we take 243 away from 250, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 14:
If we divide 70 by 81, we get 0 and a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 8153.6419753
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

In conclusion, the division gives 8153.6419753 with a balance of 7e-08.