213556 ÷ 28 
The aim is to understand the frequency of 28 in 213556.

Step 1:
28 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 28

Let's proceed to step 2:
If we divide 21 by 28, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 28

Step 3:
213 divided by 28 is 7 with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 196 from 213 leaves us with 17.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 28

On to step 4:
The number 28 fits into 175 6 times, leaving a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
Deduct 168 from 175 and we're left with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 28

Moving on to step 5:
When dividing 75 by 28, we get 2 with a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 762.0
If we subtract 56 from 75, we get 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 28

Going ahead to step 6:
28 goes into 196 7 times with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 7627.0
If we take 196 away from 196, we end up 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.

Step 7:
If we divide 0 by 28, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7627.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
28 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7627.0
Deduct 0 from 0 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.

The quotient of the division is 7627.0, and the remainder is 0.0.