We look at the division of 612359 by 81 
We want to divide 612359 by 81.

Let's proceed to step 1:
If we divide 6 by 81, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 81

Let's proceed to step 2:
The number 81 fits into 61 0 times, leaving a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 61, we end up with 61.
Include the next digit (2) from the dividend after 61, then repeat: 612 / 81

Step 3:
612 divided by 81 is 7 with a remainder of 45.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 567 from 612, we get 45.
Bring next digit (3) of the dividend behind the 45 and repeat the process: 453 / 81

Step 4:
453 divided by 81 is 5 with a remainder of 48.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
If we take 405 away from 453, we end up with 48.
Grab the next digit (5) from the dividend, add it to 48, then carry on: 485 / 81

Advancing to step 5:
485 divided by 81 is 5 with a remainder of 80.
The number 5 becomes the next digit in our result. 
Result so far: 755.0
If we subtract 405 from 485, we get 80.
Grab the next digit (9) from the dividend, add it to 80, then carry on: 809 / 81

Advancing to step 6:
When dividing 809 by 81, we get 9 with a remainder of 80.
Use 9 as the next digit of our solution. 
Result so far: 7559.0
If we take 729 away from 809, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 7:
If we divide 800 by 81, we get 9 and a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 7559.9
Subtracting 729 from 800 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 8:
710 divided by 81 is 8 with a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 7559.98
If we take 648 away from 710, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 9:
If we divide 620 by 81, we get 7 and a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 7559.987
Subtract 567 from 620 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 10:
If we divide 530 by 81, we get 6 and a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 7559.9876
The remainder is 44 after subtracting 486 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 11:
81 can be fit into 440 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 7559.98765
If we subtract 405 from 440, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
81 goes into 350 4 times with a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 7559.987654
Subtract 324 from 350 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 13:
If we divide 260 by 81, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 7559.9876543
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 14:
The number 81 fits into 170 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 7559.98765432
Deduct 162 from 170 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 7559.98765432 with a remainder of 8e-09.