We're dividing 42027 by 81 
We want to figure out the number of times 42027 can be divided by 81.

Going ahead to step 1:
4 divided by 81 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 81

Advancing to step 2:
42 divided by 81 is 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 81

On to step 3:
When dividing 420 by 81, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 405 from 420, we get 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 81

Step 4:
When dividing 152 by 81, we get 1 with a remainder of 71.
The next digit of our result is 1. 
Result so far: 51.0
If we take 81 away from 152, we end up with 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 81

Moving on to step 5:
81 goes into 717 8 times with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 518.0
If we take 648 away from 717, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 6:
The number 81 fits into 690 8 times, leaving a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 518.8
Subtract 648 from 690 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 7:
81 can be fit into 420 5 times, resulting in a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 518.85
Subtracting 405 from 420 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
150 divided by 81 is 1 with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 518.851
Subtract 81 from 150 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 9:
When dividing 690 by 81, we get 8 with a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 518.8518
Subtract 648 from 690 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
If we divide 420 by 81, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 518.85185
Deduct 405 from 420 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
81 goes into 150 1 times with a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 518.851851
Deduct 81 from 150 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 12:
If we divide 690 by 81, we get 8 and a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 518.8518518
If we take 648 away from 690, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 13:
The number 81 fits into 420 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 518.85185185
Subtract 405 from 420 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 518.85185185, with a leftover of 1.5e-08.