We divide 107909 by 25
We want to figure out the number of times 107909 can be divided by 25.

Moving on to step 1:
25 can be fit into 1 0 times, resulting in 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.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 25

Going ahead to step 2:
25 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 10 and we're left with 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 25

Moving on to step 3:
107 divided by 25 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 100 from 107 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 25

On to step 4:
When dividing 79 by 25, we get 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtracting 75 from 79 leaves us with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 25

Going ahead to step 5:
40 divided by 25 is 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 431.0
If we take 25 away from 40, we end up with 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 25

Step 6:
159 divided by 25 is 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 4316.0
If we take 150 away from 159, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
When dividing 90 by 25, we get 3 with a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 4316.3
Subtract 75 from 90 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
25 goes into 150 6 times with a remainder of 0.
The next digit of our result is 6. 
Result so far: 4316.36
If we take 150 away from 150, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 25 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4316.36
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
The number 25 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 4316.36
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 4316.36 and a remainder of 0.0.