129639 divided by 68 
We want to figure out the number of times 129639 can be divided by 68.

Advancing to step 1:
When dividing 1 by 68, 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.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 68

On to step 2:
The number 68 fits into 12 0 times, leaving a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 68

Moving on to step 3:
129 divided by 68 is 1 with a remainder of 61.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 68 away from 129, we end up with 61.
Bring next digit (6) of the dividend behind the 61 and repeat the process: 616 / 68

Step 4:
If we divide 616 by 68, we get 9 and a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we take 612 away from 616, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 68

Step 5:
When dividing 43 by 68, we get 0 with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 190.0
The remainder is 43 after subtracting 0 from 43.
Fetch the next digit (9) from the dividend, attach it to 43 and continue: 439 / 68

Going ahead to step 6:
If we divide 439 by 68, we get 6 and a remainder of 31.
Use 6 as the next digit of our solution. 
Result so far: 1906.0
Deduct 408 from 439 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.

Step 7:
If we divide 310 by 68, we get 4 and a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 1906.4
Subtracting 272 from 310 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 8:
The number 68 fits into 380 5 times, leaving a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 1906.45
The remainder is 40 after subtracting 340 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
The number 68 fits into 400 5 times, leaving a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 1906.455
The remainder is 60 after subtracting 340 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Our division results in 1906.455 with a remaining 0.006.