We look at the division of 14991409 by 539 
The aim is to understand the frequency of 539 in 14991409.

On to step 1:
The number 539 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 539

Step 2:
539 can be fit into 14 0 times, resulting in a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 539

Moving on to step 3:
149 divided by 539 is 0 with a remainder of 149.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 149, we end up with 149.
Fetch the next digit (9) from the dividend, attach it to 149 and continue: 1499 / 539

Going ahead to step 4:
539 goes into 1499 2 times with a remainder of 421.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1078 from 1499 leaves us with 421.
Fetch the next digit (1) from the dividend, attach it to 421 and continue: 4211 / 539

Going ahead to step 5:
If we divide 4211 by 539, we get 7 and a remainder of 438.
Write down 7 as next digit of the result. 
Result so far: 27.0
Deduct 3773 from 4211 and we're left with 438.
Grab the next digit (4) from the dividend, add it to 438, then carry on: 4384 / 539

Moving on to step 6:
539 can be fit into 4384 8 times, resulting in a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 278.0
Subtract 4312 from 4384 to get 72.
Take the next digit (0) from the dividend and append it to 72, then repeat: 720 / 539

Advancing to step 7:
720 divided by 539 is 1 with a remainder of 181.
Use 1 as the next digit of our solution. 
Result so far: 2781.0
Subtracting 539 from 720 leaves us with 181.
Include the next digit (9) from the dividend after 181, then repeat: 1819 / 539

On to step 8:
1819 divided by 539 is 3 with a remainder of 202.
Write down 3 as next digit of the result. 
Result so far: 27813.0
Subtracting 1617 from 1819 leaves us with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Step 9:
The number 539 fits into 2020 3 times, leaving a remainder of 403.
The number 3 becomes the next digit in our result. 
Result so far: 27813.3
Subtracting 1617 from 2020 leaves us with 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Step 10:
539 can be fit into 4030 7 times, resulting in a remainder of 257.
Put 7 as the next digit of the answer. 
Result so far: 27813.37
If we take 3773 away from 4030, we end up with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Moving on to step 11:
539 goes into 2570 4 times with a remainder of 414.
Record the quotient 4 as the next digit in the result. 
Result so far: 27813.374
Subtract 2156 from 2570 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Moving on to step 12:
If we divide 4140 by 539, we get 7 and a remainder of 367.
Use 7 as the next digit of our solution. 
Result so far: 27813.3747
The remainder is 367 after subtracting 3773 from 4140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Going ahead to step 13:
When dividing 3670 by 539, we get 6 with a remainder of 436.
Record the quotient 6 as the next digit in the result. 
Result so far: 27813.37476
Subtracting 3234 from 3670 leaves us with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Let's proceed to step 14:
When dividing 4360 by 539, we get 8 with a remainder of 48.
The next digit of our result is 8. 
Result so far: 27813.374768
Subtract 4312 from 4360 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 15:
When dividing 480 by 539, we get 0 with a remainder of 480.
Use 0 as the next digit of our solution. 
Result so far: 27813.374768
Subtract 0 from 480 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 16:
539 goes into 4800 8 times with a remainder of 488.
Put 8 as the next digit of the answer. 
Result so far: 27813.37476808
Deduct 4312 from 4800 and we're left with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Our division results in 27813.37476808 with a remaining 4.88e-07.