We divide 401966 by 81
We want to figure out the number of times 401966 can be divided by 81.

On to step 1:
81 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 81

Moving on to step 2:
81 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Grab the next digit (1) from the dividend, add it to 40, then carry on: 401 / 81

Going ahead to step 3:
81 can be fit into 401 4 times, resulting in a remainder of 77.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 324 from 401, we get 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 81

Going ahead to step 4:
When dividing 779 by 81, we get 9 with a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we take 729 away from 779, we end up with 50.
Include the next digit (6) from the dividend after 50, then repeat: 506 / 81

On to step 5:
81 can be fit into 506 6 times, resulting in a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 496.0
Subtract 486 from 506 to get 20.
Include the next digit (6) from the dividend after 20, then repeat: 206 / 81

Step 6:
81 can be fit into 206 2 times, resulting in a remainder of 44.
Record the quotient 2 as the next digit in the result. 
Result so far: 4962.0
The remainder is 44 after subtracting 162 from 206.
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 7:
The number 81 fits into 440 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 4962.5
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.

On to step 8:
The number 81 fits into 350 4 times, leaving a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 4962.54
Subtracting 324 from 350 leaves us 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.

Moving on to step 9:
260 divided by 81 is 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 4962.543
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 10:
81 can be fit into 170 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 4962.5432
Deduct 162 from 170 and we're left 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.

Let's proceed to step 11:
80 divided by 81 is 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 4962.5432
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
81 goes into 800 9 times with a remainder of 71.
The next digit of our result is 9. 
Result so far: 4962.543209
Deduct 729 from 800 and we're left 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.

Let's proceed to step 13:
If we divide 710 by 81, we get 8 and a remainder of 62.
The next digit of our result is 8. 
Result so far: 4962.5432098
The remainder is 62 after subtracting 648 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 14:
If we divide 620 by 81, we get 7 and a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 4962.54320987
The remainder is 53 after subtracting 567 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

After the division, we end up with 4962.54320987 and a remainder of 5.3e-08.