Let's divide 12861669 by 1
The aim is to understand the frequency of 1 in 12861669.

Let's proceed to step 1:
1 divided by 1 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 1 from 1 and we're left with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Going ahead to step 2:
When dividing 2 by 1, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 2 from 2, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 1

On to step 3:
8 divided by 1 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 128.0
Subtract 8 from 8 to get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 1

Moving on to step 4:
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: 1286.0
Deduct 6 from 6 and we're left with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Let's proceed to step 5:
The number 1 fits into 1 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 12861.0
Subtracting 1 from 1 leaves us with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

On to step 6:
6 divided by 1 is 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 128616.0
Deduct 6 from 6 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Moving on to step 7:
If we divide 6 by 1, we get 6 and a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 1286166.0
Deduct 6 from 6 and we're left with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 1

Moving on to step 8:
When dividing 9 by 1, we get 9 with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 12861669.0
Deduct 9 from 9 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.

Moving on to step 9:
0 divided by 1 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12861669.0
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.

Moving on to step 10:
When dividing 0 by 1, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 12861669.0
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.

Our division results in 12861669.0 with a remaining 0.0.