We look at the division of 6498631 by 81 
Let's see how many times 81 fits into 6498631.

Going ahead to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 81

Let's proceed to step 2:
81 can be fit into 64 0 times, resulting in a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Fetch the next digit (9) from the dividend, attach it to 64 and continue: 649 / 81

Moving on to step 3:
When dividing 649 by 81, we get 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 648 from 649 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 81

Step 4:
81 can be fit into 18 0 times, resulting in a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Deduct 0 from 18 and we're left with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 81

Moving on to step 5:
186 divided by 81 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 802.0
The remainder is 24 after subtracting 162 from 186.
Take the next digit (3) from the dividend and append it to 24, then repeat: 243 / 81

On to step 6:
When dividing 243 by 81, we get 3 with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 8023.0
If we take 243 away from 243, we end up with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 81

Moving on to step 7:
The number 81 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 80230.0
Subtract 0 from 1 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
81 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 80230.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
81 goes into 100 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 80230.01
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 10:
81 can be fit into 190 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 80230.012
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 11:
If we divide 280 by 81, we get 3 and a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 80230.0123
If we take 243 away from 280, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 12:
370 divided by 81 is 4 with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 80230.01234
Subtract 324 from 370 to 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.

Step 13:
The number 81 fits into 460 5 times, leaving a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 80230.012345
Subtract 405 from 460 to get 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 14:
If we divide 550 by 81, we get 6 and a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 80230.0123456
The remainder is 64 after subtracting 486 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 15:
When dividing 640 by 81, we get 7 with a remainder of 73.
Write down 7 as next digit of the result. 
Result so far: 80230.01234567
Subtract 567 from 640 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

The quotient of the division is 80230.01234567, and the remainder is 7.3e-08.