804664 ÷ 7 
The aim is to understand the frequency of 7 in 804664.

Step 1:
When dividing 8 by 7, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 7 from 8.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 7

On to step 2:
7 goes into 10 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 7 from 10 leaves us with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 7

On to step 3:
7 can be fit into 34 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 114.0
Subtracting 28 from 34 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 7

Moving on to step 4:
7 can be fit into 66 9 times, resulting in a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 1149.0
Subtracting 63 from 66 leaves us with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 7

Advancing to step 5:
The number 7 fits into 36 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 11495.0
Deduct 35 from 36 and we're left with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 7

Step 6:
The number 7 fits into 14 2 times, leaving a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 114952.0
If we take 14 away from 14, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
When dividing 0 by 7, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 114952.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
If we divide 0 by 7, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 114952.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 114952.0, with a leftover of 0.0.