We're dividing 872650 by 25 
The aim is to understand the frequency of 25 in 872650.

On to step 1:
8 divided by 25 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 25

Advancing to step 2:
25 goes into 87 3 times with a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 75 from 87 and we're left with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 25

On to step 3:
122 divided by 25 is 4 with a remainder of 22.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Subtracting 100 from 122 leaves us with 22.
Grab the next digit (6) from the dividend, add it to 22, then carry on: 226 / 25

Advancing to step 4:
226 divided by 25 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 349.0
Subtracting 225 from 226 leaves us with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 25

Advancing to step 5:
15 divided by 25 is 0 with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 3490.0
If we subtract 0 from 15, we get 15.
Take the next digit (0) from the dividend and append it to 15, then repeat: 150 / 25

Advancing to step 6:
When dividing 150 by 25, we get 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 34906.0
Subtract 150 from 150 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.

Moving on to step 7:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34906.0
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.

Going ahead to step 8:
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: 34906.0
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.

The final outcome is 34906.0, with a leftover of 0.0.