72997599 ÷ 530 
The aim is to understand the frequency of 530 in 72997599.

On to step 1:
The number 530 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 530

Advancing to step 2:
The number 530 fits into 72 0 times, leaving a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (9) of the dividend behind the 72 and repeat the process: 729 / 530

Moving on to step 3:
When dividing 729 by 530, we get 1 with a remainder of 199.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 199 after subtracting 530 from 729.
Grab the next digit (9) from the dividend, add it to 199, then carry on: 1999 / 530

Going ahead to step 4:
1999 divided by 530 is 3 with a remainder of 409.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 1590 from 1999 and we're left with 409.
Bring next digit (7) of the dividend behind the 409 and repeat the process: 4097 / 530

Let's proceed to step 5:
When dividing 4097 by 530, we get 7 with a remainder of 387.
Use 7 as the next digit of our solution. 
Result so far: 137.0
Subtracting 3710 from 4097 leaves us with 387.
Bring next digit (5) of the dividend behind the 387 and repeat the process: 3875 / 530

On to step 6:
The number 530 fits into 3875 7 times, leaving a remainder of 165.
The number 7 becomes the next digit in our result. 
Result so far: 1377.0
If we subtract 3710 from 3875, we get 165.
Fetch the next digit (9) from the dividend, attach it to 165 and continue: 1659 / 530

Going ahead to step 7:
530 goes into 1659 3 times with a remainder of 69.
Write down 3 as next digit of the result. 
Result so far: 13773.0
Deduct 1590 from 1659 and we're left with 69.
Take the next digit (9) from the dividend and append it to 69, then repeat: 699 / 530

Advancing to step 8:
When dividing 699 by 530, we get 1 with a remainder of 169.
Put 1 as the next digit of the answer. 
Result so far: 137731.0
Subtract 530 from 699 to get 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Going ahead to step 9:
530 goes into 1690 3 times with a remainder of 100.
The next digit of our result is 3. 
Result so far: 137731.3
If we take 1590 away from 1690, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 10:
530 can be fit into 1000 1 times, resulting in a remainder of 470.
The next digit of our result is 1. 
Result so far: 137731.31
Subtract 530 from 1000 to get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 11:
530 can be fit into 4700 8 times, resulting in a remainder of 460.
Put 8 as the next digit of the answer. 
Result so far: 137731.318
If we subtract 4240 from 4700, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 12:
If we divide 4600 by 530, we get 8 and a remainder of 360.
The next digit of our result is 8. 
Result so far: 137731.3188
Subtracting 4240 from 4600 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

After the division, we end up with 137731.3188 and a remainder of 0.0036.