542280 ÷ 81 
We're looking to find how many times 81 goes into 542280.

Advancing to step 1:
When dividing 5 by 81, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 81

Going ahead to step 2:
When dividing 54 by 81, we get 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Grab the next digit (2) from the dividend, add it to 54, then carry on: 542 / 81

Step 3:
81 goes into 542 6 times with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 486 from 542 leaves us with 56.
Append the next digit (2) from the dividend to 56 and continue with: 562 / 81

Step 4:
The number 81 fits into 562 6 times, leaving a remainder of 76.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Deduct 486 from 562 and we're left with 76.
Fetch the next digit (8) from the dividend, attach it to 76 and continue: 768 / 81

Step 5:
If we divide 768 by 81, we get 9 and a remainder of 39.
Record the quotient 9 as the next digit in the result. 
Result so far: 669.0
Deduct 729 from 768 and we're left with 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 81

Going ahead to step 6:
390 divided by 81 is 4 with a remainder of 66.
The next digit of our result is 4. 
Result so far: 6694.0
Subtract 324 from 390 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 7:
660 divided by 81 is 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 6694.8
Deduct 648 from 660 and we're left 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.

Let's proceed to step 8:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 6694.81
The remainder is 39 after subtracting 81 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 9:
When dividing 390 by 81, we get 4 with a remainder of 66.
Put 4 as the next digit of the answer. 
Result so far: 6694.814
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.

Advancing to step 10:
If we divide 660 by 81, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 6694.8148
Subtracting 648 from 660 leaves us 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.

Going ahead to step 11:
When dividing 120 by 81, we get 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 6694.81481
Deduct 81 from 120 and we're left 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.

On to step 12:
The number 81 fits into 390 4 times, leaving a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 6694.814814
If we take 324 away from 390, we end up 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 13:
When dividing 660 by 81, we get 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 6694.8148148
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.

Moving on to step 14:
If we divide 120 by 81, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 6694.81481481
Subtracting 81 from 120 leaves us 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.

The final result is 6694.81481481 with a remainder of 3.9e-08.