72054513 ÷ 549 
The aim is to understand the frequency of 549 in 72054513.

Going ahead to step 1:
When dividing 7 by 549, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 549

On to step 2:
When dividing 72 by 549, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Take the next digit (0) from the dividend and append it to 72, then repeat: 720 / 549

Step 3:
When dividing 720 by 549, we get 1 with a remainder of 171.
The next digit of our result is 1. 
Result so far: 1.0
If we take 549 away from 720, we end up with 171.
Bring next digit (5) of the dividend behind the 171 and repeat the process: 1715 / 549

Step 4:
549 goes into 1715 3 times with a remainder of 68.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 1647 from 1715 and we're left with 68.
Include the next digit (4) from the dividend after 68, then repeat: 684 / 549

Step 5:
549 can be fit into 684 1 times, resulting in a remainder of 135.
Put 1 as the next digit of the answer. 
Result so far: 131.0
Deduct 549 from 684 and we're left with 135.
Take the next digit (5) from the dividend and append it to 135, then repeat: 1355 / 549

Step 6:
The number 549 fits into 1355 2 times, leaving a remainder of 257.
The next digit of our result is 2. 
Result so far: 1312.0
If we subtract 1098 from 1355, we get 257.
Fetch the next digit (1) from the dividend, attach it to 257 and continue: 2571 / 549

Step 7:
If we divide 2571 by 549, we get 4 and a remainder of 375.
Write down 4 as next digit of the result. 
Result so far: 13124.0
If we take 2196 away from 2571, we end up with 375.
Bring next digit (3) of the dividend behind the 375 and repeat the process: 3753 / 549

Advancing to step 8:
The number 549 fits into 3753 6 times, leaving a remainder of 459.
The number 6 becomes the next digit in our result. 
Result so far: 131246.0
Subtract 3294 from 3753 to get 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

On to step 9:
549 goes into 4590 8 times with a remainder of 198.
Write down 8 as next digit of the result. 
Result so far: 131246.8
Subtract 4392 from 4590 to get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

On to step 10:
When dividing 1980 by 549, we get 3 with a remainder of 333.
The next digit of our result is 3. 
Result so far: 131246.83
Subtracting 1647 from 1980 leaves us with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Step 11:
549 goes into 3330 6 times with a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 131246.836
Subtract 3294 from 3330 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 12:
549 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 131246.836
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 13:
If we divide 3600 by 549, we get 6 and a remainder of 306.
Put 6 as the next digit of the answer. 
Result so far: 131246.83606
If we subtract 3294 from 3600, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Let's proceed to step 14:
If we divide 3060 by 549, we get 5 and a remainder of 315.
The next digit of our result is 5. 
Result so far: 131246.836065
Deduct 2745 from 3060 and we're left with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Step 15:
549 can be fit into 3150 5 times, resulting in a remainder of 405.
Write down 5 as next digit of the result. 
Result so far: 131246.8360655
If we subtract 2745 from 3150, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Our division results in 131246.8360655 with a remaining 4.05e-06.