We look at the division of 339642 by 28 
The aim is to understand the frequency of 28 in 339642.

Moving on to step 1:
If we divide 3 by 28, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 28

Let's proceed to step 2:
If we divide 33 by 28, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 28 from 33 to get 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 28

Going ahead to step 3:
59 divided by 28 is 2 with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 56 away from 59, we end up with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 28

Let's proceed to step 4:
28 goes into 36 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 121.0
If we take 28 away from 36, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 28

On to step 5:
When dividing 84 by 28, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 1213.0
Deduct 84 from 84 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 28

Moving on to step 6:
28 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 12130.0
If we subtract 0 from 2, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
28 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 12130.0
Deduct 0 from 20 and we're left 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.

Going ahead to step 8:
200 divided by 28 is 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 12130.07
Subtracting 196 from 200 leaves us 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 9:
40 divided by 28 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 12130.071
Subtract 28 from 40 to 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.

Step 10:
When dividing 120 by 28, we get 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 12130.0714
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.

Going ahead to step 11:
If we divide 80 by 28, we get 2 and a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 12130.07142
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 12:
240 divided by 28 is 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 12130.071428
If we subtract 224 from 240, we 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.

Step 13:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 12130.0714285
Deduct 140 from 160 and we're left 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.

Step 14:
The number 28 fits into 200 7 times, leaving a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 12130.07142857
The remainder is 4 after subtracting 196 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 12130.07142857 with a remaining 4e-09.