We're dividing 456021 by 81 
Our goal is to divide 456021 by 81.

Step 1:
4 divided by 81 is 0 with 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.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 81

Let's proceed to step 2:
If we divide 45 by 81, we get 0 and a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Include the next digit (6) from the dividend after 45, then repeat: 456 / 81

On to step 3:
When dividing 456 by 81, we get 5 with a remainder of 51.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 405 from 456 to get 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 81

Going ahead to step 4:
When dividing 510 by 81, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 56.0
If we subtract 486 from 510, we get 24.
Bring next digit (2) of the dividend behind the 24 and repeat the process: 242 / 81

On to step 5:
81 can be fit into 242 2 times, resulting in a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 562.0
Subtracting 162 from 242 leaves us with 80.
Include the next digit (1) from the dividend after 80, then repeat: 801 / 81

Let's proceed to step 6:
The number 81 fits into 801 9 times, leaving a remainder of 72.
Write down 9 as next digit of the result. 
Result so far: 5629.0
If we take 729 away from 801, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 7:
When dividing 720 by 81, we get 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 5629.8
Deduct 648 from 720 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 8:
81 goes into 720 8 times with a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 5629.88
Subtract 648 from 720 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 5629.88, and the remainder is 0.072.