We're dividing 20480800 by 221 
The aim is to understand the frequency of 221 in 20480800.

Advancing to step 1:
221 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 221

Moving on to step 2:
The number 221 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 221

Going ahead to step 3:
The number 221 fits into 204 0 times, leaving a remainder of 204.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 204, we end up with 204.
Append the next digit (8) from the dividend to 204 and continue with: 2048 / 221

Advancing to step 4:
If we divide 2048 by 221, we get 9 and a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 1989 from 2048 and we're left with 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 221

Moving on to step 5:
If we divide 590 by 221, we get 2 and a remainder of 148.
The next digit of our result is 2. 
Result so far: 92.0
If we take 442 away from 590, we end up with 148.
Include the next digit (8) from the dividend after 148, then repeat: 1488 / 221

Step 6:
221 goes into 1488 6 times with a remainder of 162.
The number 6 becomes the next digit in our result. 
Result so far: 926.0
Subtract 1326 from 1488 to get 162.
Append the next digit (0) from the dividend to 162 and continue with: 1620 / 221

On to step 7:
221 goes into 1620 7 times with a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 9267.0
The remainder is 73 after subtracting 1547 from 1620.
Bring next digit (0) of the dividend behind the 73 and repeat the process: 730 / 221

Step 8:
If we divide 730 by 221, we get 3 and a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 92673.0
If we take 663 away from 730, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 9:
When dividing 670 by 221, we get 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 92673.3
Deduct 663 from 670 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 10:
70 divided by 221 is 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 92673.3
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 11:
700 divided by 221 is 3 with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 92673.303
If we subtract 663 from 700, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 12:
If we divide 370 by 221, we get 1 and a remainder of 149.
The number 1 becomes the next digit in our result. 
Result so far: 92673.3031
If we subtract 221 from 370, we get 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Step 13:
221 goes into 1490 6 times with a remainder of 164.
Put 6 as the next digit of the answer. 
Result so far: 92673.30316
The remainder is 164 after subtracting 1326 from 1490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

On to step 14:
1640 divided by 221 is 7 with a remainder of 93.
Put 7 as the next digit of the answer. 
Result so far: 92673.303167
Subtracting 1547 from 1640 leaves us with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 15:
221 can be fit into 930 4 times, resulting in a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 92673.3031674
If we take 884 away from 930, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 16:
221 goes into 460 2 times with a remainder of 18.
The next digit of our result is 2. 
Result so far: 92673.30316742
Subtract 442 from 460 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 92673.30316742, with a leftover of 1.8e-08.