Let's divide 542312 by 81
We're looking to find how many times 81 goes into 542312.

Step 1:
If we divide 5 by 81, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 81

Advancing to step 2:
If we divide 54 by 81, we get 0 and a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Append the next digit (2) from the dividend to 54 and continue with: 542 / 81

Advancing to 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
Deduct 486 from 542 and we're left with 56.
Bring next digit (3) of the dividend behind the 56 and repeat the process: 563 / 81

Advancing to step 4:
81 can be fit into 563 6 times, resulting in a remainder of 77.
The next digit of our result is 6. 
Result so far: 66.0
The remainder is 77 after subtracting 486 from 563.
Take the next digit (1) from the dividend and append it to 77, then repeat: 771 / 81

On to step 5:
The number 81 fits into 771 9 times, leaving a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 669.0
The remainder is 42 after subtracting 729 from 771.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 81

Step 6:
81 can be fit into 422 5 times, resulting in a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 6695.0
Subtract 405 from 422 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
81 can be fit into 170 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 6695.2
Subtract 162 from 170 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
The number 81 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 6695.2
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.

Let's proceed to step 9:
When dividing 800 by 81, we get 9 with a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 6695.209
The remainder is 71 after subtracting 729 from 800.
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 10:
81 goes into 710 8 times with a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 6695.2098
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 11:
81 goes into 620 7 times with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 6695.20987
If we subtract 567 from 620, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 12:
81 can be fit into 530 6 times, resulting in a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 6695.209876
The remainder is 44 after subtracting 486 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 13:
81 goes into 440 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 6695.2098765
If we take 405 away from 440, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 14:
When dividing 350 by 81, we get 4 with a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 6695.20987654
If we subtract 324 from 350, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final outcome is 6695.20987654, with a leftover of 2.6e-08.