100139 ÷ 83 
We're looking to find how many times 83 goes into 100139.

Step 1:
When dividing 1 by 83, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 83

Let's proceed to step 2:
83 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 83

On to step 3:
The number 83 fits into 100 1 times, leaving a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 83 from 100 to get 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 83

On to step 4:
83 goes into 171 2 times with a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 166 away from 171, we end up with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 83

Let's proceed to step 5:
83 can be fit into 53 0 times, resulting in a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 120.0
Subtract 0 from 53 to get 53.
Include the next digit (9) from the dividend after 53, then repeat: 539 / 83

Moving on to step 6:
If we divide 539 by 83, we get 6 and a remainder of 41.
Use 6 as the next digit of our solution. 
Result so far: 1206.0
If we take 498 away from 539, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 7:
The number 83 fits into 410 4 times, leaving a remainder of 78.
The number 4 becomes the next digit in our result. 
Result so far: 1206.4
Subtract 332 from 410 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 8:
When dividing 780 by 83, we get 9 with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 1206.49
The remainder is 33 after subtracting 747 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 9:
83 can be fit into 330 3 times, resulting in a remainder of 81.
Record the quotient 3 as the next digit in the result. 
Result so far: 1206.493
Subtracting 249 from 330 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 10:
The number 83 fits into 810 9 times, leaving a remainder of 63.
Write down 9 as next digit of the result. 
Result so far: 1206.4939
Subtract 747 from 810 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 11:
When dividing 630 by 83, we get 7 with a remainder of 49.
Write down 7 as next digit of the result. 
Result so far: 1206.49397
Subtracting 581 from 630 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 12:
83 can be fit into 490 5 times, resulting in a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 1206.493975
Deduct 415 from 490 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 13:
750 divided by 83 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 1206.4939759
Subtracting 747 from 750 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
The number 83 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 1206.4939759
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final result is 1206.4939759 with a remainder of 3e-08.