We're dividing 39135239 by 124 
We want to figure out the number of times 39135239 can be divided by 124.

Step 1:
If we divide 3 by 124, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 124

Let's proceed to step 2:
124 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Fetch the next digit (1) from the dividend, attach it to 39 and continue: 391 / 124

Moving on to step 3:
If we divide 391 by 124, we get 3 and a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 372 from 391 and we're left with 19.
Include the next digit (3) from the dividend after 19, then repeat: 193 / 124

On to step 4:
The number 124 fits into 193 1 times, leaving a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Subtracting 124 from 193 leaves us with 69.
Grab the next digit (5) from the dividend, add it to 69, then carry on: 695 / 124

Advancing to step 5:
When dividing 695 by 124, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 315.0
The remainder is 75 after subtracting 620 from 695.
Bring next digit (2) of the dividend behind the 75 and repeat the process: 752 / 124

Going ahead to step 6:
When dividing 752 by 124, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 3156.0
If we subtract 744 from 752, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 124

Step 7:
83 divided by 124 is 0 with a remainder of 83.
Use 0 as the next digit of our solution. 
Result so far: 31560.0
Subtract 0 from 83 to get 83.
Fetch the next digit (9) from the dividend, attach it to 83 and continue: 839 / 124

Going ahead to step 8:
When dividing 839 by 124, we get 6 with a remainder of 95.
Use 6 as the next digit of our solution. 
Result so far: 315606.0
Subtract 744 from 839 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Moving on to step 9:
The number 124 fits into 950 7 times, leaving a remainder of 82.
Write down 7 as next digit of the result. 
Result so far: 315606.7
Deduct 868 from 950 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 10:
820 divided by 124 is 6 with a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 315606.76
The remainder is 76 after subtracting 744 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 11:
124 can be fit into 760 6 times, resulting in a remainder of 16.
The next digit of our result is 6. 
Result so far: 315606.766
If we take 744 away from 760, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 315606.766 and a remainder of 0.0016.