Let's divide 152403 by 28
The aim is to understand the frequency of 28 in 152403.

Advancing to step 1:
If we divide 1 by 28, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 28

Let's proceed to step 2:
When dividing 15 by 28, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 28

Going ahead to step 3:
152 divided by 28 is 5 with a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 12 after subtracting 140 from 152.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 28

Moving on to step 4:
When dividing 124 by 28, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 54.0
Subtract 112 from 124 to get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 28

Let's proceed to step 5:
28 can be fit into 120 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 544.0
Subtracting 112 from 120 leaves us with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 28

Going ahead to step 6:
If we divide 83 by 28, we get 2 and a remainder of 27.
The number 2 becomes the next digit in our result. 
Result so far: 5442.0
The remainder is 27 after subtracting 56 from 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
The number 28 fits into 270 9 times, leaving a remainder of 18.
The next digit of our result is 9. 
Result so far: 5442.9
If we take 252 away from 270, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 8:
28 can be fit into 180 6 times, resulting in a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 5442.96
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
If we divide 120 by 28, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 5442.964
If we take 112 away from 120, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 5442.9642
Subtract 56 from 80 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
When dividing 240 by 28, we get 8 with a remainder of 16.
The next digit of our result is 8. 
Result so far: 5442.96428
Subtract 224 from 240 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
The number 28 fits into 160 5 times, leaving a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 5442.964285
Subtract 140 from 160 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
28 goes into 200 7 times with a remainder of 4.
The next digit of our result is 7. 
Result so far: 5442.9642857
Subtract 196 from 200 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 14:
If we divide 40 by 28, we get 1 and a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 5442.96428571
Deduct 28 from 40 and we're left 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.

The final result is 5442.96428571 with a remainder of 1.2e-08.