638122 divided by 81 
We want to divide 638122 by 81.

Step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 81

On to step 2:
If we divide 63 by 81, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 81

On to step 3:
81 can be fit into 638 7 times, resulting in a remainder of 71.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 567 away from 638, we end up with 71.
Append the next digit (1) from the dividend to 71 and continue with: 711 / 81

Let's proceed to step 4:
81 goes into 711 8 times with a remainder of 63.
Write down 8 as next digit of the result. 
Result so far: 78.0
The remainder is 63 after subtracting 648 from 711.
Fetch the next digit (2) from the dividend, attach it to 63 and continue: 632 / 81

Advancing to step 5:
If we divide 632 by 81, we get 7 and a remainder of 65.
Write down 7 as next digit of the result. 
Result so far: 787.0
If we take 567 away from 632, we end up with 65.
Append the next digit (2) from the dividend to 65 and continue with: 652 / 81

Step 6:
652 divided by 81 is 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 7878.0
If we take 648 away from 652, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
81 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 7878.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 8:
The number 81 fits into 400 4 times, leaving a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 7878.04
Subtracting 324 from 400 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 9:
If we divide 760 by 81, we get 9 and a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 7878.049
The remainder is 31 after subtracting 729 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 10:
When dividing 310 by 81, we get 3 with a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 7878.0493
The remainder is 67 after subtracting 243 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 11:
When dividing 670 by 81, we get 8 with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 7878.04938
Subtracting 648 from 670 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 12:
If we divide 220 by 81, we get 2 and a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 7878.049382
Subtracting 162 from 220 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 13:
The number 81 fits into 580 7 times, leaving a remainder of 13.
The next digit of our result is 7. 
Result so far: 7878.0493827
If we subtract 567 from 580, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
If we divide 130 by 81, we get 1 and a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 7878.04938271
Subtracting 81 from 130 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The quotient of the division is 7878.04938271, and the remainder is 4.9e-08.