4151712 ÷ 225 
The aim is to understand the frequency of 225 in 4151712.

Let's proceed to step 1:
225 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 225

Going ahead to step 2:
When dividing 41 by 225, we get 0 with a remainder of 41.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 41 to get 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 225

Going ahead to step 3:
The number 225 fits into 415 1 times, leaving a remainder of 190.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 190 after subtracting 225 from 415.
Fetch the next digit (1) from the dividend, attach it to 190 and continue: 1901 / 225

Moving on to step 4:
When dividing 1901 by 225, we get 8 with a remainder of 101.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 1800 away from 1901, we end up with 101.
Append the next digit (7) from the dividend to 101 and continue with: 1017 / 225

Step 5:
225 can be fit into 1017 4 times, resulting in a remainder of 117.
Write down 4 as next digit of the result. 
Result so far: 184.0
Subtract 900 from 1017 to get 117.
Include the next digit (1) from the dividend after 117, then repeat: 1171 / 225

Step 6:
When dividing 1171 by 225, we get 5 with a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 1845.0
If we take 1125 away from 1171, we end up with 46.
Include the next digit (2) from the dividend after 46, then repeat: 462 / 225

Let's proceed to step 7:
If we divide 462 by 225, we get 2 and a remainder of 12.
The next digit of our result is 2. 
Result so far: 18452.0
Subtracting 450 from 462 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
When dividing 120 by 225, we get 0 with a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 18452.0
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 9:
225 goes into 1200 5 times with a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 18452.05
Subtract 1125 from 1200 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 10:
750 divided by 225 is 3 with a remainder of 75.
Put 3 as the next digit of the answer. 
Result so far: 18452.053
Deduct 675 from 750 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 11:
750 divided by 225 is 3 with a remainder of 75.
Write down 3 as next digit of the result. 
Result so far: 18452.0533
Subtract 675 from 750 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The final result is 18452.0533 with a remainder of 0.00075.