66143 divided by 81 
We want to divide 66143 by 81.

Going ahead 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
If we subtract 0 from 6, we get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 81

On to step 2:
81 goes into 66 0 times with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Bring next digit (1) of the dividend behind the 66 and repeat the process: 661 / 81

Let's proceed to step 3:
The number 81 fits into 661 8 times, leaving a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 648 from 661 and we're left with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 81

Advancing to step 4:
81 can be fit into 134 1 times, resulting in a remainder of 53.
The next digit of our result is 1. 
Result so far: 81.0
Subtracting 81 from 134 leaves us with 53.
Include the next digit (3) from the dividend after 53, then repeat: 533 / 81

Advancing to step 5:
533 divided by 81 is 6 with a remainder of 47.
The number 6 becomes the next digit in our result. 
Result so far: 816.0
Deduct 486 from 533 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 6:
81 goes into 470 5 times with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 816.5
Subtract 405 from 470 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 7:
650 divided by 81 is 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 816.58
Subtracting 648 from 650 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
When dividing 20 by 81, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 816.58
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
The number 81 fits into 200 2 times, leaving a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 816.5802
If we take 162 away from 200, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
380 divided by 81 is 4 with a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 816.58024
Subtracting 324 from 380 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 11:
81 can be fit into 560 6 times, resulting in a remainder of 74.
Put 6 as the next digit of the answer. 
Result so far: 816.580246
Deduct 486 from 560 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 12:
The number 81 fits into 740 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 816.5802469
If we subtract 729 from 740, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 13:
110 divided by 81 is 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 816.58024691
If we take 81 away from 110, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The final outcome is 816.58024691, with a leftover of 2.9e-08.