We're dividing 912179 by 25 
The aim is to understand the frequency of 25 in 912179.

On to step 1:
25 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 25

Advancing to step 2:
When dividing 91 by 25, we get 3 with a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 75 from 91 leaves us with 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 25

Going ahead to step 3:
When dividing 162 by 25, we get 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
If we take 150 away from 162, we end up with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 25

Moving on to step 4:
25 goes into 121 4 times with a remainder of 21.
Use 4 as the next digit of our solution. 
Result so far: 364.0
Subtract 100 from 121 to get 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 25

Moving on to step 5:
25 goes into 217 8 times with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 3648.0
The remainder is 17 after subtracting 200 from 217.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 25

On to step 6:
179 divided by 25 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 36487.0
Deduct 175 from 179 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
If we divide 40 by 25, we get 1 and a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 36487.1
Subtracting 25 from 40 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
When dividing 150 by 25, we get 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 36487.16
Deduct 150 from 150 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.

Going ahead to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 36487.16
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.

Moving on to step 10:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 36487.16
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.

The final result is 36487.16 with a remainder of 0.0.