We're dividing 865144 by 25 
The aim is to understand the frequency of 25 in 865144.

Advancing to step 1:
8 divided by 25 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 25

Going ahead to step 2:
25 goes into 86 3 times with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 75 from 86, we get 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 25

Going ahead to step 3:
25 can be fit into 115 4 times, resulting in a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
Subtracting 100 from 115 leaves us with 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 25

Going ahead to step 4:
25 can be fit into 151 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 346.0
If we take 150 away from 151, we end up with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 25

Going ahead to step 5:
The number 25 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 3460.0
Subtract 0 from 14 to get 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 25

On to step 6:
25 can be fit into 144 5 times, resulting in a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 34605.0
Subtracting 125 from 144 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 25, we get 7 with a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 34605.7
The remainder is 15 after subtracting 175 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 8:
If we divide 150 by 25, we get 6 and a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 34605.76
If we subtract 150 from 150, we 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.

Step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34605.76
If we subtract 0 from 0, we 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.

On to step 10:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34605.76
Deduct 0 from 0 and we're left 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.

The quotient of the division is 34605.76, and the remainder is 0.0.