We divide 4317525 by 1
The aim is to understand the frequency of 1 in 4317525.

Let's proceed to step 1:
1 can be fit into 4 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 4 from 4 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 1

Advancing to step 2:
The number 1 fits into 3 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
The remainder is 0 after subtracting 3 from 3.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Going ahead to step 3:
1 goes into 1 1 times with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 431.0
Subtract 1 from 1 to get 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 1

Let's proceed to step 4:
When dividing 7 by 1, we get 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 4317.0
The remainder is 0 after subtracting 7 from 7.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 1

Moving on to step 5:
5 divided by 1 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 43175.0
If we subtract 5 from 5, we get 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Advancing to step 6:
The number 1 fits into 2 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 431752.0
If we take 2 away from 2, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

On to step 7:
5 divided by 1 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 4317525.0
The remainder is 0 after subtracting 5 from 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 1, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4317525.0
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 9:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4317525.0
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.

The quotient of the division is 4317525.0, and the remainder is 0.0.