We look at the division of 149791 by 25 
The aim is to understand the frequency of 25 in 149791.

Step 1:
1 divided by 25 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 25

Moving on to step 2:
25 goes into 14 0 times with a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 25

Going ahead to step 3:
The number 25 fits into 149 5 times, leaving a remainder of 24.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 24 after subtracting 125 from 149.
Include the next digit (7) from the dividend after 24, then repeat: 247 / 25

Step 4:
25 can be fit into 247 9 times, resulting in a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 59.0
The remainder is 22 after subtracting 225 from 247.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 25

Going ahead to step 5:
25 can be fit into 229 9 times, resulting in a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 599.0
Deduct 225 from 229 and we're left with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 25

Moving on to step 6:
The number 25 fits into 41 1 times, leaving a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 5991.0
If we subtract 25 from 41, 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.

On to step 7:
25 can be fit into 160 6 times, resulting in a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 5991.6
If we take 150 away from 160, we end up 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.

Advancing to step 8:
100 divided by 25 is 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 5991.64
Subtract 100 from 100 to get 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 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5991.64
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 5991.64
If we take 0 away from 0, 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.

Our division results in 5991.64 with a remaining 0.0.