We look at the division of 644898 by 81 
Our goal is to divide 644898 by 81.

On to step 1:
The number 81 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 81

Advancing to step 2:
If we divide 64 by 81, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 81

Going ahead to step 3:
644 divided by 81 is 7 with a remainder of 77.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 567 from 644 to get 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 81

Going ahead to step 4:
If we divide 778 by 81, we get 9 and a remainder of 49.
Record the quotient 9 as the next digit in the result. 
Result so far: 79.0
Subtracting 729 from 778 leaves us with 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 81

Going ahead to step 5:
When dividing 499 by 81, we get 6 with a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 796.0
Deduct 486 from 499 and we're left with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 81

On to step 6:
81 can be fit into 138 1 times, resulting in a remainder of 57.
The number 1 becomes the next digit in our result. 
Result so far: 7961.0
If we take 81 away from 138, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 7:
If we divide 570 by 81, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 7961.7
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
The number 81 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 7961.7
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
81 can be fit into 300 3 times, resulting in a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 7961.703
If we take 243 away from 300, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 10:
81 can be fit into 570 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 7961.7037
The remainder is 3 after subtracting 567 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
If we divide 30 by 81, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 7961.7037
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 12:
81 can be fit into 300 3 times, resulting in a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 7961.703703
Subtracting 243 from 300 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 13:
When dividing 570 by 81, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 7961.7037037
If we take 567 away from 570, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 14:
When dividing 30 by 81, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 7961.7037037
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 7961.7037037 with a remaining 3e-08.