We look at the division of 83335225 by 25 
The aim is to understand the frequency of 25 in 83335225.

Let's proceed to step 1:
If we divide 8 by 25, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 25

On to step 2:
25 goes into 83 3 times with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 75 from 83 to get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 25

Moving on to step 3:
25 goes into 83 3 times with a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 33.0
If we subtract 75 from 83, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 25

Moving on to step 4:
The number 25 fits into 83 3 times, leaving a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 333.0
Deduct 75 from 83 and we're left with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 25

Step 5:
25 can be fit into 85 3 times, resulting in a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 3333.0
Subtract 75 from 85 to get 10.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 25

On to step 6:
25 can be fit into 102 4 times, resulting in a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 33334.0
Subtracting 100 from 102 leaves us with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 25

On to step 7:
25 goes into 22 0 times with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 333340.0
Deduct 0 from 22 and we're left with 22.
Include the next digit (5) from the dividend after 22, then repeat: 225 / 25

Moving on to step 8:
225 divided by 25 is 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 3333409.0
Deduct 225 from 225 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.

Advancing to step 9:
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: 3333409.0
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.

Advancing to step 10:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 3333409.0
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.

The quotient of the division is 3333409.0, and the remainder is 0.0.