We look at the division of 336637 by 28 
The aim is to understand the frequency of 28 in 336637.

Moving on to step 1:
28 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 28

Step 2:
33 divided by 28 is 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 28 away from 33, we end up with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 28

Advancing to step 3:
56 divided by 28 is 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 56 from 56, we get 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 28

Let's proceed to step 4:
If we divide 6 by 28, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 28

Moving on to step 5:
63 divided by 28 is 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 1202.0
If we subtract 56 from 63, we get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 28

Going ahead to step 6:
28 can be fit into 77 2 times, resulting in a remainder of 21.
Use 2 as the next digit of our solution. 
Result so far: 12022.0
If we take 56 away from 77, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
The number 28 fits into 210 7 times, leaving a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 12022.7
If we take 196 away from 210, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
The number 28 fits into 140 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 12022.75
Deduct 140 from 140 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 28 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 12022.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
28 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12022.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 12022.75, with a leftover of 0.0.