Let's divide 17221211 by 865
The aim is to understand the frequency of 865 in 17221211.

Step 1:
The number 865 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 865

Moving on to step 2:
If we divide 17 by 865, we get 0 and a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Fetch the next digit (2) from the dividend, attach it to 17 and continue: 172 / 865

Moving on to step 3:
When dividing 172 by 865, we get 0 with a remainder of 172.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 172, we get 172.
Append the next digit (2) from the dividend to 172 and continue with: 1722 / 865

Let's proceed to step 4:
1722 divided by 865 is 1 with a remainder of 857.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 865 from 1722 leaves us with 857.
Append the next digit (1) from the dividend to 857 and continue with: 8571 / 865

Going ahead to step 5:
If we divide 8571 by 865, we get 9 and a remainder of 786.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we take 7785 away from 8571, we end up with 786.
Bring next digit (2) of the dividend behind the 786 and repeat the process: 7862 / 865

Going ahead to step 6:
If we divide 7862 by 865, we get 9 and a remainder of 77.
Record the quotient 9 as the next digit in the result. 
Result so far: 199.0
Deduct 7785 from 7862 and we're left with 77.
Bring next digit (1) of the dividend behind the 77 and repeat the process: 771 / 865

Step 7:
The number 865 fits into 771 0 times, leaving a remainder of 771.
Write down 0 as next digit of the result. 
Result so far: 1990.0
Subtract 0 from 771 to get 771.
Bring next digit (1) of the dividend behind the 771 and repeat the process: 7711 / 865

On to step 8:
7711 divided by 865 is 8 with a remainder of 791.
Put 8 as the next digit of the answer. 
Result so far: 19908.0
If we take 6920 away from 7711, we end up with 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

On to step 9:
The number 865 fits into 7910 9 times, leaving a remainder of 125.
Record the quotient 9 as the next digit in the result. 
Result so far: 19908.9
If we take 7785 away from 7910, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 10:
If we divide 1250 by 865, we get 1 and a remainder of 385.
Use 1 as the next digit of our solution. 
Result so far: 19908.91
Subtract 865 from 1250 to get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Going ahead to step 11:
3850 divided by 865 is 4 with a remainder of 390.
Put 4 as the next digit of the answer. 
Result so far: 19908.914
Deduct 3460 from 3850 and we're left with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 12:
865 can be fit into 3900 4 times, resulting in a remainder of 440.
Record the quotient 4 as the next digit in the result. 
Result so far: 19908.9144
Subtracting 3460 from 3900 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

The final outcome is 19908.9144, with a leftover of 0.0044.