We're dividing 10599439 by 539 
The aim is to understand the frequency of 539 in 10599439.

Moving on to step 1:
If we divide 1 by 539, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 539

On to step 2:
The number 539 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 539

Let's proceed to step 3:
The number 539 fits into 105 0 times, leaving a remainder of 105.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 105, we end up with 105.
Take the next digit (9) from the dividend and append it to 105, then repeat: 1059 / 539

Going ahead to step 4:
If we divide 1059 by 539, we get 1 and a remainder of 520.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 520 after subtracting 539 from 1059.
Take the next digit (9) from the dividend and append it to 520, then repeat: 5209 / 539

Moving on to step 5:
When dividing 5209 by 539, we get 9 with a remainder of 358.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 4851 from 5209 and we're left with 358.
Grab the next digit (4) from the dividend, add it to 358, then carry on: 3584 / 539

Going ahead to step 6:
When dividing 3584 by 539, we get 6 with a remainder of 350.
The next digit of our result is 6. 
Result so far: 196.0
Subtracting 3234 from 3584 leaves us with 350.
Bring next digit (3) of the dividend behind the 350 and repeat the process: 3503 / 539

Advancing to step 7:
When dividing 3503 by 539, we get 6 with a remainder of 269.
Put 6 as the next digit of the answer. 
Result so far: 1966.0
If we subtract 3234 from 3503, we get 269.
Include the next digit (9) from the dividend after 269, then repeat: 2699 / 539

Moving on to step 8:
539 goes into 2699 5 times with a remainder of 4.
The next digit of our result is 5. 
Result so far: 19665.0
Deduct 2695 from 2699 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
If we divide 40 by 539, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 19665.0
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
400 divided by 539 is 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 19665.0
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Our division results in 19665.0 with a remaining 0.4.