555260 ÷ 20 
The aim is to understand the frequency of 20 in 555260.

Going ahead to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 20

Advancing to step 2:
If we divide 55 by 20, we get 2 and a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 40 away from 55, we end up with 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 20

Step 3:
155 divided by 20 is 7 with a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 27.0
If we subtract 140 from 155, we get 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 20

Going ahead to step 4:
The number 20 fits into 152 7 times, leaving a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 277.0
If we subtract 140 from 152, we get 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 20

Moving on to step 5:
If we divide 126 by 20, we get 6 and a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 2776.0
The remainder is 6 after subtracting 120 from 126.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 20

Moving on to step 6:
The number 20 fits into 60 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 27763.0
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 27763.0
Subtracting 0 from 0 leaves us 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 8:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 27763.0
If we take 0 away from 0, 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.

Our division results in 27763.0 with a remaining 0.0.