850620 divided by 25 
The aim is to understand the frequency of 25 in 850620.

Moving on to step 1:
25 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 25

Step 2:
If we divide 85 by 25, we get 3 and a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 75 away from 85, we end up with 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 25

Advancing to step 3:
If we divide 100 by 25, we get 4 and a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Deduct 100 from 100 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 25

Going ahead to step 4:
When dividing 6 by 25, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 340.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 25

On to step 5:
The number 25 fits into 62 2 times, leaving a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 3402.0
Deduct 50 from 62 and we're left with 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 25

Moving on to step 6:
The number 25 fits into 120 4 times, leaving a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 34024.0
If we subtract 100 from 120, we 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.

Step 7:
When dividing 200 by 25, we get 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 34024.8
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.

On to step 8:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34024.8
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.

Let's proceed to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34024.8
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.

After the division, we end up with 34024.8 and a remainder of 0.0.