We divide 80691381 by 25
The aim is to understand the frequency of 25 in 80691381.

Let's proceed to step 1:
The number 25 fits into 8 0 times, leaving 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.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 25

Step 2:
The number 25 fits into 80 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 5 after subtracting 75 from 80.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 25

Moving on to step 3:
When dividing 56 by 25, we get 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 32.0
If we subtract 50 from 56, we get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 25

Let's proceed to step 4:
25 goes into 69 2 times with a remainder of 19.
The next digit of our result is 2. 
Result so far: 322.0
Subtracting 50 from 69 leaves us with 19.
Take the next digit (1) from the dividend and append it to 19, then repeat: 191 / 25

Step 5:
25 can be fit into 191 7 times, resulting in a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 3227.0
Deduct 175 from 191 and we're left with 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 25

Advancing to step 6:
When dividing 163 by 25, we get 6 with a remainder of 13.
The next digit of our result is 6. 
Result so far: 32276.0
If we subtract 150 from 163, we get 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 25

On to step 7:
25 goes into 138 5 times with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 322765.0
If we take 125 away from 138, we end up with 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 25

Step 8:
If we divide 131 by 25, we get 5 and a remainder of 6.
The next digit of our result is 5. 
Result so far: 3227655.0
Subtract 125 from 131 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
When dividing 60 by 25, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 3227655.2
The remainder is 10 after subtracting 50 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
The number 25 fits into 100 4 times, leaving a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 3227655.24
If we take 100 away from 100, 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.

Advancing to step 11:
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: 3227655.24
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.

Let's proceed to step 12:
If we divide 0 by 25, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3227655.24
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.

After the division, we end up with 3227655.24 and a remainder of 0.0.