558194 ÷ 25 
The aim is to understand the frequency of 25 in 558194.

Step 1:
5 divided by 25 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 25

On to step 2:
25 goes into 55 2 times with a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 50 from 55 leaves us with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 25

On to step 3:
25 can be fit into 58 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtract 50 from 58 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 25

Step 4:
If we divide 81 by 25, we get 3 and a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 223.0
The remainder is 6 after subtracting 75 from 81.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 25

Let's proceed to step 5:
25 goes into 69 2 times with a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 2232.0
Subtracting 50 from 69 leaves us with 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 25

Moving on to step 6:
25 can be fit into 194 7 times, resulting in a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 22327.0
If we subtract 175 from 194, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
If we divide 190 by 25, we get 7 and a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 22327.7
The remainder is 15 after subtracting 175 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
25 can be fit into 150 6 times, resulting in a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 22327.76
Deduct 150 from 150 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:
25 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 22327.76
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.

Step 10:
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: 22327.76
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.

After the division, we end up with 22327.76 and a remainder of 0.0.