We look at the division of 657245 by 1 
The aim is to understand the frequency of 1 in 657245.

Going ahead to step 1:
When dividing 6 by 1, we get 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 6 from 6, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

Moving on to step 2:
1 can be fit into 5 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Deduct 5 from 5 and we're left with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 1

Let's proceed to step 3:
7 divided by 1 is 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 657.0
Subtracting 7 from 7 leaves us with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Going ahead to step 4:
1 goes into 2 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 6572.0
If we take 2 away from 2, we end up with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Let's proceed to step 5:
When dividing 4 by 1, we get 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 65724.0
If we subtract 4 from 4, we get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 1

Advancing to step 6:
5 divided by 1 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 657245.0
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 7:
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: 657245.0
The remainder is 0 after subtracting 0 from 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 8:
1 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 657245.0
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 657245.0, and the remainder is 0.0.