339031 ÷ 81 
We want to figure out the number of times 339031 can be divided by 81.

Going ahead to step 1:
If we divide 3 by 81, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 81

Advancing to step 2:
When dividing 33 by 81, we get 0 with a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 81

Let's proceed to step 3:
If we divide 339 by 81, we get 4 and a remainder of 15.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 324 from 339 and we're left with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 81

Moving on to step 4:
When dividing 150 by 81, we get 1 with a remainder of 69.
The next digit of our result is 1. 
Result so far: 41.0
Subtract 81 from 150 to get 69.
Append the next digit (3) from the dividend to 69 and continue with: 693 / 81

Let's proceed to step 5:
81 can be fit into 693 8 times, resulting in a remainder of 45.
The number 8 becomes the next digit in our result. 
Result so far: 418.0
If we take 648 away from 693, we end up with 45.
Take the next digit (1) from the dividend and append it to 45, then repeat: 451 / 81

Step 6:
The number 81 fits into 451 5 times, leaving a remainder of 46.
Use 5 as the next digit of our solution. 
Result so far: 4185.0
If we take 405 away from 451, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 7:
81 can be fit into 460 5 times, resulting in a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 4185.5
Subtract 405 from 460 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 8:
81 can be fit into 550 6 times, resulting in a remainder of 64.
The next digit of our result is 6. 
Result so far: 4185.56
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 9:
When dividing 640 by 81, we get 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 4185.567
The remainder is 73 after subtracting 567 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 10:
81 can be fit into 730 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 4185.5679
The remainder is 1 after subtracting 729 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
When dividing 10 by 81, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 4185.5679
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
When dividing 100 by 81, we get 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 4185.567901
Subtracting 81 from 100 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 13:
81 goes into 190 2 times with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 4185.5679012
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 14:
If we divide 280 by 81, we get 3 and a remainder of 37.
The next digit of our result is 3. 
Result so far: 4185.56790123
The remainder is 37 after subtracting 243 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

After the division, we end up with 4185.56790123 and a remainder of 3.7e-08.