54103051 ÷ 225 
The aim is to understand the frequency of 225 in 54103051.

Let's proceed to step 1:
5 divided by 225 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 225

Moving on to step 2:
225 can be fit into 54 0 times, resulting in a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Include the next digit (1) from the dividend after 54, then repeat: 541 / 225

Let's proceed to step 3:
If we divide 541 by 225, we get 2 and a remainder of 91.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 450 from 541 and we're left with 91.
Grab the next digit (0) from the dividend, add it to 91, then carry on: 910 / 225

Advancing to step 4:
225 goes into 910 4 times with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtracting 900 from 910 leaves us with 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 225

Advancing to step 5:
When dividing 103 by 225, we get 0 with a remainder of 103.
Write down 0 as next digit of the result. 
Result so far: 240.0
Subtracting 0 from 103 leaves us with 103.
Append the next digit (0) from the dividend to 103 and continue with: 1030 / 225

Step 6:
The number 225 fits into 1030 4 times, leaving a remainder of 130.
Use 4 as the next digit of our solution. 
Result so far: 2404.0
If we take 900 away from 1030, we end up with 130.
Fetch the next digit (5) from the dividend, attach it to 130 and continue: 1305 / 225

Let's proceed to step 7:
When dividing 1305 by 225, we get 5 with a remainder of 180.
The number 5 becomes the next digit in our result. 
Result so far: 24045.0
Subtract 1125 from 1305 to get 180.
Include the next digit (1) from the dividend after 180, then repeat: 1801 / 225

Step 8:
1801 divided by 225 is 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 240458.0
If we subtract 1800 from 1801, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
10 divided by 225 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 240458.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
When dividing 100 by 225, we get 0 with a remainder of 100.
Use 0 as the next digit of our solution. 
Result so far: 240458.0
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 240458.0 with a remainder of 0.1.