We look at the division of 18895187 by 221 
The aim is to understand the frequency of 221 in 18895187.

On to step 1:
1 divided by 221 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 221

Advancing to step 2:
221 goes into 18 0 times with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 221

Step 3:
When dividing 188 by 221, we get 0 with a remainder of 188.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 188 to get 188.
Append the next digit (9) from the dividend to 188 and continue with: 1889 / 221

Advancing to step 4:
If we divide 1889 by 221, we get 8 and a remainder of 121.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 1768 from 1889 leaves us with 121.
Take the next digit (5) from the dividend and append it to 121, then repeat: 1215 / 221

Let's proceed to step 5:
When dividing 1215 by 221, we get 5 with a remainder of 110.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
If we subtract 1105 from 1215, we get 110.
Grab the next digit (1) from the dividend, add it to 110, then carry on: 1101 / 221

Moving on to step 6:
221 goes into 1101 4 times with a remainder of 217.
The number 4 becomes the next digit in our result. 
Result so far: 854.0
The remainder is 217 after subtracting 884 from 1101.
Include the next digit (8) from the dividend after 217, then repeat: 2178 / 221

Step 7:
221 goes into 2178 9 times with a remainder of 189.
Use 9 as the next digit of our solution. 
Result so far: 8549.0
Deduct 1989 from 2178 and we're left with 189.
Take the next digit (7) from the dividend and append it to 189, then repeat: 1897 / 221

Going ahead to step 8:
When dividing 1897 by 221, we get 8 with a remainder of 129.
Write down 8 as next digit of the result. 
Result so far: 85498.0
Subtracting 1768 from 1897 leaves us with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Step 9:
When dividing 1290 by 221, we get 5 with a remainder of 185.
The number 5 becomes the next digit in our result. 
Result so far: 85498.5
If we take 1105 away from 1290, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

On to step 10:
If we divide 1850 by 221, we get 8 and a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 85498.58
Subtract 1768 from 1850 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 11:
When dividing 820 by 221, we get 3 with a remainder of 157.
Record the quotient 3 as the next digit in the result. 
Result so far: 85498.583
The remainder is 157 after subtracting 663 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Moving on to step 12:
221 goes into 1570 7 times with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 85498.5837
Subtracting 1547 from 1570 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 13:
230 divided by 221 is 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 85498.58371
Subtracting 221 from 230 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
221 can be fit into 90 0 times, resulting in a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 85498.58371
The remainder is 90 after subtracting 0 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 15:
900 divided by 221 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 85498.5837104
Subtracting 884 from 900 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 16:
When dividing 160 by 221, we get 0 with a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 85498.5837104
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

The final result is 85498.5837104 with a remainder of 1.6e-07.