We're dividing 397560 by 1 
The aim is to understand the frequency of 1 in 397560.

Step 1:
3 divided by 1 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 3 from 3, we get 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 1

Moving on to step 2:
1 can be fit into 9 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 39.0
Subtract 9 from 9 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Moving on to step 3:
1 can be fit into 7 7 times, resulting in a remainder of 0.
The next digit of our result is 7. 
Result so far: 397.0
Deduct 7 from 7 and we're left with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

Going ahead to step 4:
1 goes into 5 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 3975.0
Subtracting 5 from 5 leaves us with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 1

On to step 5:
1 can be fit into 6 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 39756.0
If we take 6 away from 6, we end up with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 1

Advancing to step 6:
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: 397560.0
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.

Advancing to step 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 397560.0
Subtracting 0 from 0 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.

Let's proceed to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 397560.0
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.

In conclusion, the division gives 397560.0 with a balance of 0.0.