78078069 ÷ 12 
The aim is to understand the frequency of 12 in 78078069.

Advancing to step 1:
12 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 12

Going ahead to step 2:
12 can be fit into 78 6 times, resulting in a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 6 after subtracting 72 from 78.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 12

Let's proceed to step 3:
When dividing 60 by 12, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Subtracting 60 from 60 leaves us with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 12

Advancing to step 4:
7 divided by 12 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 650.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 12

Step 5:
The number 12 fits into 78 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 6506.0
The remainder is 6 after subtracting 72 from 78.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 12

Moving on to step 6:
The number 12 fits into 60 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 65065.0
The remainder is 0 after subtracting 60 from 60.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 12

Step 7:
12 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 650650.0
If we subtract 0 from 6, we get 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 12

Advancing to step 8:
If we divide 69 by 12, we get 5 and a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 6506505.0
Deduct 60 from 69 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 9:
The number 12 fits into 90 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 6506505.7
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
12 goes into 60 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 6506505.75
Subtracting 60 from 60 leaves us 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.

Going ahead to step 11:
If we divide 0 by 12, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6506505.75
Deduct 0 from 0 and we're left 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.

Let's proceed to step 12:
0 divided by 12 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 6506505.75
If we take 0 away from 0, 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.

The quotient of the division is 6506505.75, and the remainder is 0.0.