We look at the division of 84646097 by 878 
The aim is to understand the frequency of 878 in 84646097.

Step 1:
The number 878 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 878

Moving on to step 2:
878 goes into 84 0 times with a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Include the next digit (6) from the dividend after 84, then repeat: 846 / 878

Step 3:
878 goes into 846 0 times with a remainder of 846.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 846 leaves us with 846.
Fetch the next digit (4) from the dividend, attach it to 846 and continue: 8464 / 878

Going ahead to step 4:
The number 878 fits into 8464 9 times, leaving a remainder of 562.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 7902 from 8464, we get 562.
Include the next digit (6) from the dividend after 562, then repeat: 5626 / 878

Going ahead to step 5:
878 goes into 5626 6 times with a remainder of 358.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
Subtracting 5268 from 5626 leaves us with 358.
Fetch the next digit (0) from the dividend, attach it to 358 and continue: 3580 / 878

Step 6:
3580 divided by 878 is 4 with a remainder of 68.
Record the quotient 4 as the next digit in the result. 
Result so far: 964.0
Subtract 3512 from 3580 to get 68.
Fetch the next digit (9) from the dividend, attach it to 68 and continue: 689 / 878

Going ahead to step 7:
878 can be fit into 689 0 times, resulting in a remainder of 689.
The number 0 becomes the next digit in our result. 
Result so far: 9640.0
Subtract 0 from 689 to get 689.
Include the next digit (7) from the dividend after 689, then repeat: 6897 / 878

Step 8:
The number 878 fits into 6897 7 times, leaving a remainder of 751.
Write down 7 as next digit of the result. 
Result so far: 96407.0
Subtracting 6146 from 6897 leaves us with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Advancing to step 9:
7510 divided by 878 is 8 with a remainder of 486.
Use 8 as the next digit of our solution. 
Result so far: 96407.8
Subtract 7024 from 7510 to get 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

On to step 10:
4860 divided by 878 is 5 with a remainder of 470.
The next digit of our result is 5. 
Result so far: 96407.85
Subtracting 4390 from 4860 leaves us with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Let's proceed to step 11:
878 goes into 4700 5 times with a remainder of 310.
Record the quotient 5 as the next digit in the result. 
Result so far: 96407.855
Subtracting 4390 from 4700 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The final outcome is 96407.855, with a leftover of 0.031.