128491 divided by 39 
We want to figure out the number of times 128491 can be divided by 39.

Let's proceed to step 1:
1 divided by 39 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 39

Advancing to step 2:
39 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 39

Advancing to step 3:
39 can be fit into 128 3 times, resulting in a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 117 from 128 to get 11.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 39

Going ahead to step 4:
When dividing 114 by 39, we get 2 with a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 32.0
If we take 78 away from 114, we end up with 36.
Take the next digit (9) from the dividend and append it to 36, then repeat: 369 / 39

Moving on to step 5:
369 divided by 39 is 9 with a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 329.0
The remainder is 18 after subtracting 351 from 369.
Grab the next digit (1) from the dividend, add it to 18, then carry on: 181 / 39

Moving on to step 6:
The number 39 fits into 181 4 times, leaving a remainder of 25.
Put 4 as the next digit of the answer. 
Result so far: 3294.0
The remainder is 25 after subtracting 156 from 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 7:
If we divide 250 by 39, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 3294.6
Subtract 234 from 250 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 8:
160 divided by 39 is 4 with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 3294.64
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
If we divide 40 by 39, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 3294.641
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
The number 39 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 3294.641
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
39 goes into 100 2 times with a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 3294.64102
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 12:
39 can be fit into 220 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 3294.641025
Deduct 195 from 220 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 13:
If we divide 250 by 39, we get 6 and a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 3294.6410256
If we subtract 234 from 250, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 14:
39 goes into 160 4 times with a remainder of 4.
The next digit of our result is 4. 
Result so far: 3294.64102564
Subtract 156 from 160 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 3294.64102564 with a balance of 4e-09.