809435 ÷ 12 
The aim is to understand the frequency of 12 in 809435.

Moving on to step 1:
12 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 12

Step 2:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 72 from 80 to get 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 12

On to step 3:
12 can be fit into 89 7 times, resulting in a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
Subtract 84 from 89 to get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 12

Step 4:
12 can be fit into 54 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 674.0
Deduct 48 from 54 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 12

Step 5:
When dividing 63 by 12, we get 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 6745.0
If we take 60 away from 63, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 12

On to step 6:
The number 12 fits into 35 2 times, leaving a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 67452.0
The remainder is 11 after subtracting 24 from 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
The number 12 fits into 110 9 times, leaving a remainder of 2.
The next digit of our result is 9. 
Result so far: 67452.9
If we take 108 away from 110, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
12 goes into 20 1 times with a remainder of 8.
The next digit of our result is 1. 
Result so far: 67452.91
If we subtract 12 from 20, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 67452.916
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
12 goes into 80 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 67452.9166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 67452.9166, with a leftover of 8e-05.