541531 ÷ 81 
We want to figure out the number of times 541531 can be divided by 81.

On to step 1:
If we divide 5 by 81, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 81

Moving on to step 2:
The number 81 fits into 54 0 times, leaving a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Include the next digit (1) from the dividend after 54, then repeat: 541 / 81

Step 3:
541 divided by 81 is 6 with a remainder of 55.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 486 from 541 to get 55.
Bring next digit (5) of the dividend behind the 55 and repeat the process: 555 / 81

Advancing to step 4:
The number 81 fits into 555 6 times, leaving a remainder of 69.
Put 6 as the next digit of the answer. 
Result so far: 66.0
Deduct 486 from 555 and we're left with 69.
Take the next digit (3) from the dividend and append it to 69, then repeat: 693 / 81

Going ahead to step 5:
When dividing 693 by 81, we get 8 with a remainder of 45.
The next digit of our result is 8. 
Result so far: 668.0
If we subtract 648 from 693, we get 45.
Fetch the next digit (1) from the dividend, attach it to 45 and continue: 451 / 81

Moving on to step 6:
81 goes into 451 5 times with a remainder of 46.
Use 5 as the next digit of our solution. 
Result so far: 6685.0
If we subtract 405 from 451, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 7:
The number 81 fits into 460 5 times, leaving a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 6685.5
Deduct 405 from 460 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 8:
The number 81 fits into 550 6 times, leaving a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 6685.56
If we subtract 486 from 550, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 9:
The number 81 fits into 640 7 times, leaving a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 6685.567
If we take 567 away from 640, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 10:
730 divided by 81 is 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 6685.5679
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
81 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 6685.5679
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
The number 81 fits into 100 1 times, leaving a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 6685.567901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 13:
81 goes into 190 2 times with a remainder of 28.
The next digit of our result is 2. 
Result so far: 6685.5679012
The remainder is 28 after subtracting 162 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 14:
280 divided by 81 is 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 6685.56790123
Subtract 243 from 280 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Our division results in 6685.56790123 with a remaining 3.7e-08.