We divide 85319259 by 221
The aim is to understand the frequency of 221 in 85319259.

Advancing to step 1:
When dividing 8 by 221, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 221

Step 2:
221 goes into 85 0 times with a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Fetch the next digit (3) from the dividend, attach it to 85 and continue: 853 / 221

On to step 3:
If we divide 853 by 221, we get 3 and a remainder of 190.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 190 after subtracting 663 from 853.
Grab the next digit (1) from the dividend, add it to 190, then carry on: 1901 / 221

Going ahead to step 4:
1901 divided by 221 is 8 with a remainder of 133.
The next digit of our result is 8. 
Result so far: 38.0
The remainder is 133 after subtracting 1768 from 1901.
Fetch the next digit (9) from the dividend, attach it to 133 and continue: 1339 / 221

Moving on to step 5:
If we divide 1339 by 221, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 386.0
If we take 1326 away from 1339, we end up with 13.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 221

Let's proceed to step 6:
132 divided by 221 is 0 with a remainder of 132.
The next digit of our result is 0. 
Result so far: 3860.0
Deduct 0 from 132 and we're left with 132.
Append the next digit (5) from the dividend to 132 and continue with: 1325 / 221

Advancing to step 7:
1325 divided by 221 is 5 with a remainder of 220.
Record the quotient 5 as the next digit in the result. 
Result so far: 38605.0
Subtracting 1105 from 1325 leaves us with 220.
Grab the next digit (9) from the dividend, add it to 220, then carry on: 2209 / 221

Going ahead to step 8:
221 goes into 2209 9 times with a remainder of 220.
The number 9 becomes the next digit in our result. 
Result so far: 386059.0
If we subtract 1989 from 2209, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 9:
2200 divided by 221 is 9 with a remainder of 211.
The number 9 becomes the next digit in our result. 
Result so far: 386059.9
Subtract 1989 from 2200 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 10:
The number 221 fits into 2110 9 times, leaving a remainder of 121.
Record the quotient 9 as the next digit in the result. 
Result so far: 386059.99
Subtract 1989 from 2110 to get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Our division results in 386059.99 with a remaining 0.121.