436855 ÷ 81 
Let's see how many times 81 fits into 436855.

Going ahead to step 1:
When dividing 4 by 81, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 81

Advancing to step 2:
When dividing 43 by 81, we get 0 with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Take the next digit (6) from the dividend and append it to 43, then repeat: 436 / 81

Going ahead to step 3:
When dividing 436 by 81, we get 5 with a remainder of 31.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 405 away from 436, we end up with 31.
Include the next digit (8) from the dividend after 31, then repeat: 318 / 81

On to step 4:
If we divide 318 by 81, we get 3 and a remainder of 75.
Put 3 as the next digit of the answer. 
Result so far: 53.0
Subtracting 243 from 318 leaves us with 75.
Grab the next digit (5) from the dividend, add it to 75, then carry on: 755 / 81

Let's proceed to step 5:
When dividing 755 by 81, we get 9 with a remainder of 26.
The next digit of our result is 9. 
Result so far: 539.0
The remainder is 26 after subtracting 729 from 755.
Append the next digit (5) from the dividend to 26 and continue with: 265 / 81

Step 6:
81 can be fit into 265 3 times, resulting in a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 5393.0
Subtract 243 from 265 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
If we divide 220 by 81, we get 2 and a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 5393.2
Subtract 162 from 220 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 8:
The number 81 fits into 580 7 times, leaving a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 5393.27
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 9:
If we divide 130 by 81, we get 1 and a remainder of 49.
The next digit of our result is 1. 
Result so far: 5393.271
The remainder is 49 after subtracting 81 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 10:
81 can be fit into 490 6 times, resulting in a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 5393.2716
If we take 486 away from 490, 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.

Advancing to step 11:
81 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 5393.2716
Deduct 0 from 40 and we're left with 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 12:
81 goes into 400 4 times with a remainder of 76.
The next digit of our result is 4. 
Result so far: 5393.271604
If we subtract 324 from 400, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 13:
760 divided by 81 is 9 with a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 5393.2716049
Deduct 729 from 760 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 14:
81 goes into 310 3 times with a remainder of 67.
Record the quotient 3 as the next digit in the result. 
Result so far: 5393.27160493
Subtract 243 from 310 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

The final result is 5393.27160493 with a remainder of 6.7e-08.