We look at the division of 12172415 by 868 
The aim is to understand the frequency of 868 in 12172415.

Going ahead to step 1:
868 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 868

On to step 2:
12 divided by 868 is 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 868

Step 3:
The number 868 fits into 121 0 times, leaving a remainder of 121.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 121, we get 121.
Include the next digit (7) from the dividend after 121, then repeat: 1217 / 868

Let's proceed to step 4:
1217 divided by 868 is 1 with a remainder of 349.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 868 from 1217 leaves us with 349.
Fetch the next digit (2) from the dividend, attach it to 349 and continue: 3492 / 868

Step 5:
The number 868 fits into 3492 4 times, leaving a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtracting 3472 from 3492 leaves us with 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 868

Going ahead to step 6:
204 divided by 868 is 0 with a remainder of 204.
Record the quotient 0 as the next digit in the result. 
Result so far: 140.0
The remainder is 204 after subtracting 0 from 204.
Grab the next digit (1) from the dividend, add it to 204, then carry on: 2041 / 868

Going ahead to step 7:
When dividing 2041 by 868, we get 2 with a remainder of 305.
Put 2 as the next digit of the answer. 
Result so far: 1402.0
If we take 1736 away from 2041, we end up with 305.
Grab the next digit (5) from the dividend, add it to 305, then carry on: 3055 / 868

Going ahead to step 8:
When dividing 3055 by 868, we get 3 with a remainder of 451.
The next digit of our result is 3. 
Result so far: 14023.0
Subtract 2604 from 3055 to get 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Advancing to step 9:
The number 868 fits into 4510 5 times, leaving a remainder of 170.
The next digit of our result is 5. 
Result so far: 14023.5
If we subtract 4340 from 4510, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 10:
If we divide 1700 by 868, we get 1 and a remainder of 832.
Write down 1 as next digit of the result. 
Result so far: 14023.51
Subtracting 868 from 1700 leaves us with 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Advancing to step 11:
The number 868 fits into 8320 9 times, leaving a remainder of 508.
Put 9 as the next digit of the answer. 
Result so far: 14023.519
Subtracting 7812 from 8320 leaves us with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

On to step 12:
When dividing 5080 by 868, we get 5 with a remainder of 740.
Write down 5 as next digit of the result. 
Result so far: 14023.5195
Subtract 4340 from 5080 to get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Let's proceed to step 13:
7400 divided by 868 is 8 with a remainder of 456.
Use 8 as the next digit of our solution. 
Result so far: 14023.51958
Subtract 6944 from 7400 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 14:
When dividing 4560 by 868, we get 5 with a remainder of 220.
Record the quotient 5 as the next digit in the result. 
Result so far: 14023.519585
Subtract 4340 from 4560 to 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.

Let's proceed to step 15:
The number 868 fits into 2200 2 times, leaving a remainder of 464.
Use 2 as the next digit of our solution. 
Result so far: 14023.5195852
Subtract 1736 from 2200 to get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Going ahead to step 16:
The number 868 fits into 4640 5 times, leaving a remainder of 300.
The next digit of our result is 5. 
Result so far: 14023.51958525
If we subtract 4340 from 4640, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final outcome is 14023.51958525, with a leftover of 3e-07.