631843 ÷ 81 
Let's see how many times 81 fits into 631843.

Moving on to step 1:
6 divided by 81 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 81

On to step 2:
When dividing 63 by 81, we get 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Take the next digit (1) from the dividend and append it to 63, then repeat: 631 / 81

Advancing to step 3:
81 can be fit into 631 7 times, resulting in a remainder of 64.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 567 from 631, we get 64.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 81

Advancing to step 4:
When dividing 648 by 81, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 78.0
Deduct 648 from 648 and we're left with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 81

Let's proceed to step 5:
The number 81 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 780.0
If we subtract 0 from 4, we get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 81

Advancing to step 6:
43 divided by 81 is 0 with a remainder of 43.
The next digit of our result is 0. 
Result so far: 7800.0
If we take 0 away from 43, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
The number 81 fits into 430 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 7800.5
The remainder is 25 after subtracting 405 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
When dividing 250 by 81, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 7800.53
If we take 243 away from 250, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
70 divided by 81 is 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 7800.53
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
The number 81 fits into 700 8 times, leaving a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 7800.5308
Subtract 648 from 700 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 11:
The number 81 fits into 520 6 times, leaving a remainder of 34.
The next digit of our result is 6. 
Result so far: 7800.53086
The remainder is 34 after subtracting 486 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 12:
When dividing 340 by 81, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 7800.530864
If we subtract 324 from 340, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
81 can be fit into 160 1 times, resulting in a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 7800.5308641
The remainder is 79 after subtracting 81 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 14:
If we divide 790 by 81, we get 9 and a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 7800.53086419
If we subtract 729 from 790, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The quotient of the division is 7800.53086419, and the remainder is 6.1e-08.