870670 divided by 25 
The aim is to understand the frequency of 25 in 870670.

Step 1:
If we divide 8 by 25, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 25

On to step 2:
When dividing 87 by 25, we get 3 with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 75 from 87 and we're left with 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 25

On to step 3:
25 can be fit into 120 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 34.0
The remainder is 20 after subtracting 100 from 120.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 25

Let's proceed to step 4:
25 can be fit into 206 8 times, resulting in a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 348.0
If we subtract 200 from 206, we get 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 25

Going ahead to step 5:
The number 25 fits into 67 2 times, leaving a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 3482.0
Deduct 50 from 67 and we're left with 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 25

Moving on to step 6:
When dividing 170 by 25, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 34826.0
Subtract 150 from 170 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 7:
25 can be fit into 200 8 times, resulting in a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 34826.8
Subtract 200 from 200 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.

Step 8:
25 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34826.8
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.

Moving on to step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34826.8
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.

After the division, we end up with 34826.8 and a remainder of 0.0.