446903 ÷ 25 
The aim is to understand the frequency of 25 in 446903.

Step 1:
The number 25 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 25

Let's proceed to step 2:
25 goes into 44 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 25 from 44 and we're left with 19.
Bring next digit (6) of the dividend behind the 19 and repeat the process: 196 / 25

On to step 3:
196 divided by 25 is 7 with a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtracting 175 from 196 leaves us with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 25

Moving on to step 4:
25 goes into 219 8 times with a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 178.0
Subtract 200 from 219 to get 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 25

Moving on to step 5:
190 divided by 25 is 7 with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 1787.0
The remainder is 15 after subtracting 175 from 190.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 25

Step 6:
If we divide 153 by 25, we get 6 and a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 17876.0
Deduct 150 from 153 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
When dividing 30 by 25, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 17876.1
If we subtract 25 from 30, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
When dividing 50 by 25, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 17876.12
The remainder is 0 after subtracting 50 from 50.
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 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 17876.12
The remainder is 0 after subtracting 0 from 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:
If we divide 0 by 25, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17876.12
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 final result is 17876.12 with a remainder of 0.0.