We divide 535569 by 1
The aim is to understand the frequency of 1 in 535569.

Advancing to step 1:
The number 1 fits into 5 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 5 from 5, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 1

On to step 2:
1 goes into 3 3 times with a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 53.0
If we take 3 away from 3, we end up with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

On to step 3:
1 goes into 5 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 535.0
Subtract 5 from 5 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

Moving on to step 4:
The number 1 fits into 5 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5355.0
Deduct 5 from 5 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Going ahead to step 5:
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: 53556.0
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 6:
1 can be fit into 9 9 times, resulting in a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 535569.0
If we take 9 away from 9, 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.

Let's proceed to step 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 535569.0
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.

Moving on to step 8:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 535569.0
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.

In conclusion, the division gives 535569.0 with a balance of 0.0.