We're dividing 402285 by 81 
We want to figure out the number of times 402285 can be divided by 81.

Step 1:
If we divide 4 by 81, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 81

Moving on to step 2:
The number 81 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Take the next digit (2) from the dividend and append it to 40, then repeat: 402 / 81

Step 3:
When dividing 402 by 81, we get 4 with a remainder of 78.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 324 from 402 leaves us with 78.
Grab the next digit (2) from the dividend, add it to 78, then carry on: 782 / 81

Moving on to step 4:
When dividing 782 by 81, we get 9 with a remainder of 53.
Use 9 as the next digit of our solution. 
Result so far: 49.0
The remainder is 53 after subtracting 729 from 782.
Fetch the next digit (8) from the dividend, attach it to 53 and continue: 538 / 81

Moving on to step 5:
538 divided by 81 is 6 with a remainder of 52.
Put 6 as the next digit of the answer. 
Result so far: 496.0
Subtracting 486 from 538 leaves us with 52.
Include the next digit (5) from the dividend after 52, then repeat: 525 / 81

Advancing to step 6:
The number 81 fits into 525 6 times, leaving a remainder of 39.
Write down 6 as next digit of the result. 
Result so far: 4966.0
The remainder is 39 after subtracting 486 from 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
If we divide 390 by 81, we get 4 and a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 4966.4
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 8:
660 divided by 81 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 4966.48
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
81 can be fit into 120 1 times, resulting in a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 4966.481
If we take 81 away from 120, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 10:
81 goes into 390 4 times with a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 4966.4814
Deduct 324 from 390 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 11:
660 divided by 81 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 4966.48148
The remainder is 12 after subtracting 648 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 12:
81 goes into 120 1 times with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 4966.481481
Subtract 81 from 120 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 13:
81 goes into 390 4 times with a remainder of 66.
Put 4 as the next digit of the answer. 
Result so far: 4966.4814814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 14:
The number 81 fits into 660 8 times, leaving a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 4966.48148148
If we take 648 away from 660, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 4966.48148148, with a leftover of 1.2e-08.