Let's divide 12909996 by 1
The aim is to understand the frequency of 1 in 12909996.

Going ahead to step 1:
1 divided by 1 is 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 1 from 1, we get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 1

Moving on to step 2:
2 divided by 1 is 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 2 from 2 and we're left with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 1

Going ahead to step 3:
1 can be fit into 9 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 129.0
If we take 9 away from 9, we end up with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 1

Advancing to step 4:
If we divide 0 by 1, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1290.0
If we subtract 0 from 0, we get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 1

Moving on to step 5:
If we divide 9 by 1, we get 9 and a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 12909.0
If we subtract 9 from 9, we get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 1

Advancing to step 6:
When dividing 9 by 1, we get 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 129099.0
If we take 9 away from 9, we end up with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 1

Going ahead to step 7:
If we divide 9 by 1, we get 9 and a remainder of 0.
The next digit of our result is 9. 
Result so far: 1290999.0
Deduct 9 from 9 and we're left with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 1

Advancing to step 8:
The number 1 fits into 6 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 12909996.0
The remainder is 0 after subtracting 6 from 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
When dividing 0 by 1, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12909996.0
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.

Going ahead to step 10:
If we divide 0 by 1, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 12909996.0
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 quotient of the division is 12909996.0, and the remainder is 0.0.