525720 ÷ 1 
The aim is to understand the frequency of 1 in 525720.

Step 1:
1 can be fit into 5 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 5 from 5 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 1

Going ahead to step 2:
1 goes into 2 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
Subtracting 2 from 2 leaves us with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

Going ahead to step 3:
When dividing 5 by 1, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 525.0
Deduct 5 from 5 and we're left with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 1

On to step 4:
1 goes into 7 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 5257.0
Subtract 7 from 7 to get 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 1

Step 5:
The number 1 fits into 2 2 times, leaving a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 52572.0
Subtracting 2 from 2 leaves us with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 1

Let's proceed to step 6:
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: 525720.0
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.

Moving on to step 7:
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: 525720.0
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.

Let's proceed to step 8:
1 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 525720.0
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.

In conclusion, the division gives 525720.0 with a balance of 0.0.