We look at the division of 55364356 by 221 
The aim is to understand the frequency of 221 in 55364356.

Step 1:
The number 221 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 221

Let's proceed to step 2:
When dividing 55 by 221, we get 0 with a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Append the next digit (3) from the dividend to 55 and continue with: 553 / 221

On to step 3:
553 divided by 221 is 2 with a remainder of 111.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 442 from 553 leaves us with 111.
Include the next digit (6) from the dividend after 111, then repeat: 1116 / 221

Going ahead to step 4:
When dividing 1116 by 221, we get 5 with a remainder of 11.
The next digit of our result is 5. 
Result so far: 25.0
If we take 1105 away from 1116, we end up with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 221

Advancing to step 5:
114 divided by 221 is 0 with a remainder of 114.
Write down 0 as next digit of the result. 
Result so far: 250.0
If we take 0 away from 114, we end up with 114.
Append the next digit (3) from the dividend to 114 and continue with: 1143 / 221

On to step 6:
The number 221 fits into 1143 5 times, leaving a remainder of 38.
Write down 5 as next digit of the result. 
Result so far: 2505.0
The remainder is 38 after subtracting 1105 from 1143.
Fetch the next digit (5) from the dividend, attach it to 38 and continue: 385 / 221

Step 7:
The number 221 fits into 385 1 times, leaving a remainder of 164.
The next digit of our result is 1. 
Result so far: 25051.0
If we take 221 away from 385, we end up with 164.
Grab the next digit (6) from the dividend, add it to 164, then carry on: 1646 / 221

Step 8:
The number 221 fits into 1646 7 times, leaving a remainder of 99.
The number 7 becomes the next digit in our result. 
Result so far: 250517.0
If we subtract 1547 from 1646, we get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 9:
When dividing 990 by 221, we get 4 with a remainder of 106.
Use 4 as the next digit of our solution. 
Result so far: 250517.4
If we subtract 884 from 990, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 10:
221 goes into 1060 4 times with a remainder of 176.
Put 4 as the next digit of the answer. 
Result so far: 250517.44
Subtract 884 from 1060 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Our division results in 250517.44 with a remaining 0.176.