81206311 ÷ 839 
We're looking to find how many times 839 goes into 81206311.

Moving on to step 1:
When dividing 8 by 839, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 839

Let's proceed to step 2:
If we divide 81 by 839, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Take the next digit (2) from the dividend and append it to 81, then repeat: 812 / 839

On to step 3:
When dividing 812 by 839, we get 0 with a remainder of 812.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 812, we get 812.
Fetch the next digit (0) from the dividend, attach it to 812 and continue: 8120 / 839

Moving on to step 4:
The number 839 fits into 8120 9 times, leaving a remainder of 569.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 7551 from 8120 to get 569.
Append the next digit (6) from the dividend to 569 and continue with: 5696 / 839

Going ahead to step 5:
When dividing 5696 by 839, we get 6 with a remainder of 662.
Write down 6 as next digit of the result. 
Result so far: 96.0
Deduct 5034 from 5696 and we're left with 662.
Fetch the next digit (3) from the dividend, attach it to 662 and continue: 6623 / 839

Moving on to step 6:
The number 839 fits into 6623 7 times, leaving a remainder of 750.
Record the quotient 7 as the next digit in the result. 
Result so far: 967.0
Subtract 5873 from 6623 to get 750.
Fetch the next digit (1) from the dividend, attach it to 750 and continue: 7501 / 839

Let's proceed to step 7:
When dividing 7501 by 839, we get 8 with a remainder of 789.
Use 8 as the next digit of our solution. 
Result so far: 9678.0
If we subtract 6712 from 7501, we get 789.
Fetch the next digit (1) from the dividend, attach it to 789 and continue: 7891 / 839

Advancing to step 8:
839 can be fit into 7891 9 times, resulting in a remainder of 340.
Use 9 as the next digit of our solution. 
Result so far: 96789.0
Subtract 7551 from 7891 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 9:
839 can be fit into 3400 4 times, resulting in a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 96789.4
Deduct 3356 from 3400 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 10:
839 can be fit into 440 0 times, resulting in a remainder of 440.
Record the quotient 0 as the next digit in the result. 
Result so far: 96789.4
Deduct 0 from 440 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 11:
4400 divided by 839 is 5 with a remainder of 205.
Put 5 as the next digit of the answer. 
Result so far: 96789.405
Deduct 4195 from 4400 and we're left with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Let's proceed to step 12:
The number 839 fits into 2050 2 times, leaving a remainder of 372.
Record the quotient 2 as the next digit in the result. 
Result so far: 96789.4052
The remainder is 372 after subtracting 1678 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Going ahead to step 13:
If we divide 3720 by 839, we get 4 and a remainder of 364.
The number 4 becomes the next digit in our result. 
Result so far: 96789.40524
The remainder is 364 after subtracting 3356 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 14:
When dividing 3640 by 839, we get 4 with a remainder of 284.
The number 4 becomes the next digit in our result. 
Result so far: 96789.405244
If we subtract 3356 from 3640, we get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

The quotient of the division is 96789.405244, and the remainder is 2.84e-05.