We're dividing 421482 by 28 
The aim is to understand the frequency of 28 in 421482.

Moving on to step 1:
If we divide 4 by 28, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 28

Step 2:
When dividing 42 by 28, we get 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 28 from 42, we get 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 28

Step 3:
The number 28 fits into 141 5 times, leaving a remainder of 1.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 140 from 141 and we're left with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 28

On to step 4:
28 goes into 14 0 times with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 150.0
The remainder is 14 after subtracting 0 from 14.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 28

On to step 5:
28 goes into 148 5 times with a remainder of 8.
The next digit of our result is 5. 
Result so far: 1505.0
If we subtract 140 from 148, we get 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 28

On to step 6:
82 divided by 28 is 2 with a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 15052.0
If we subtract 56 from 82, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 7:
28 can be fit into 260 9 times, resulting in a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 15052.9
Deduct 252 from 260 and we're left 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.

Step 8:
When dividing 80 by 28, we get 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 15052.92
Subtracting 56 from 80 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 15052.928
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.

Moving on to step 10:
28 can be fit into 160 5 times, resulting in a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 15052.9285
If we take 140 away from 160, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
The number 28 fits into 200 7 times, leaving a remainder of 4.
The next digit of our result is 7. 
Result so far: 15052.92857
If we take 196 away from 200, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
If we divide 40 by 28, we get 1 and a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 15052.928571
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.

On to step 13:
When dividing 120 by 28, we get 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 15052.9285714
Subtracting 112 from 120 leaves us 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.

On to step 14:
When dividing 80 by 28, we get 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 15052.92857142
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.

The final result is 15052.92857142 with a remainder of 2.4e-08.