We look at the division of 78647686 by 805 
The aim is to understand the frequency of 805 in 78647686.

Let's proceed to step 1:
7 divided by 805 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 805

Advancing to step 2:
If we divide 78 by 805, we get 0 and a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Append the next digit (6) from the dividend to 78 and continue with: 786 / 805

Let's proceed to step 3:
805 can be fit into 786 0 times, resulting in a remainder of 786.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 786, we end up with 786.
Bring next digit (4) of the dividend behind the 786 and repeat the process: 7864 / 805

Moving on to step 4:
805 can be fit into 7864 9 times, resulting in a remainder of 619.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 7245 from 7864 and we're left with 619.
Include the next digit (7) from the dividend after 619, then repeat: 6197 / 805

Step 5:
805 can be fit into 6197 7 times, resulting in a remainder of 562.
Use 7 as the next digit of our solution. 
Result so far: 97.0
Subtracting 5635 from 6197 leaves us with 562.
Grab the next digit (6) from the dividend, add it to 562, then carry on: 5626 / 805

On to step 6:
805 goes into 5626 6 times with a remainder of 796.
Use 6 as the next digit of our solution. 
Result so far: 976.0
The remainder is 796 after subtracting 4830 from 5626.
Include the next digit (8) from the dividend after 796, then repeat: 7968 / 805

Moving on to step 7:
If we divide 7968 by 805, we get 9 and a remainder of 723.
Write down 9 as next digit of the result. 
Result so far: 9769.0
The remainder is 723 after subtracting 7245 from 7968.
Append the next digit (6) from the dividend to 723 and continue with: 7236 / 805

On to step 8:
When dividing 7236 by 805, we get 8 with a remainder of 796.
Put 8 as the next digit of the answer. 
Result so far: 97698.0
Deduct 6440 from 7236 and we're left with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Let's proceed to step 9:
When dividing 7960 by 805, we get 9 with a remainder of 715.
Use 9 as the next digit of our solution. 
Result so far: 97698.9
Deduct 7245 from 7960 and we're left with 715.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7150, and continue the process.

Let's proceed to step 10:
If we divide 7150 by 805, we get 8 and a remainder of 710.
The next digit of our result is 8. 
Result so far: 97698.98
Deduct 6440 from 7150 and we're left with 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Moving on to step 11:
The number 805 fits into 7100 8 times, leaving a remainder of 660.
Write down 8 as next digit of the result. 
Result so far: 97698.988
Subtracting 6440 from 7100 leaves us with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

The final outcome is 97698.988, with a leftover of 0.066.