We're dividing 359891 by 81 
Let's see how many times 81 fits into 359891.

Step 1:
81 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 81

Step 2:
If we divide 35 by 81, we get 0 and a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Include the next digit (9) from the dividend after 35, then repeat: 359 / 81

Moving on to step 3:
When dividing 359 by 81, we get 4 with a remainder of 35.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 324 away from 359, we end up with 35.
Fetch the next digit (8) from the dividend, attach it to 35 and continue: 358 / 81

On to step 4:
If we divide 358 by 81, we get 4 and a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
If we subtract 324 from 358, we get 34.
Grab the next digit (9) from the dividend, add it to 34, then carry on: 349 / 81

Let's proceed to step 5:
If we divide 349 by 81, we get 4 and a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 444.0
Subtract 324 from 349 to get 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 81

Let's proceed to step 6:
251 divided by 81 is 3 with a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 4443.0
If we subtract 243 from 251, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
80 divided by 81 is 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 4443.0
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 8:
If we divide 800 by 81, we get 9 and a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 4443.09
Subtract 729 from 800 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 9:
When dividing 710 by 81, we get 8 with a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 4443.098
Subtract 648 from 710 to get 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 10:
620 divided by 81 is 7 with a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 4443.0987
The remainder is 53 after subtracting 567 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 11:
81 can be fit into 530 6 times, resulting in a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 4443.09876
If we subtract 486 from 530, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 12:
If we divide 440 by 81, we get 5 and a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 4443.098765
Subtracting 405 from 440 leaves us with 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 13:
The number 81 fits into 350 4 times, leaving a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 4443.0987654
If we take 324 away from 350, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
When dividing 260 by 81, we get 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 4443.09876543
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.

The final result is 4443.09876543 with a remainder of 1.7e-08.