87128431 divided by 547 
The aim is to understand the frequency of 547 in 87128431.

On to step 1:
When dividing 8 by 547, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 547

Advancing to step 2:
The number 547 fits into 87 0 times, leaving a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Take the next digit (1) from the dividend and append it to 87, then repeat: 871 / 547

On to step 3:
547 can be fit into 871 1 times, resulting in a remainder of 324.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 324 after subtracting 547 from 871.
Fetch the next digit (2) from the dividend, attach it to 324 and continue: 3242 / 547

Going ahead to step 4:
When dividing 3242 by 547, we get 5 with a remainder of 507.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we take 2735 away from 3242, we end up with 507.
Include the next digit (8) from the dividend after 507, then repeat: 5078 / 547

Advancing to step 5:
When dividing 5078 by 547, we get 9 with a remainder of 155.
Record the quotient 9 as the next digit in the result. 
Result so far: 159.0
The remainder is 155 after subtracting 4923 from 5078.
Append the next digit (4) from the dividend to 155 and continue with: 1554 / 547

On to step 6:
547 goes into 1554 2 times with a remainder of 460.
Put 2 as the next digit of the answer. 
Result so far: 1592.0
Subtract 1094 from 1554 to get 460.
Append the next digit (3) from the dividend to 460 and continue with: 4603 / 547

On to step 7:
547 goes into 4603 8 times with a remainder of 227.
The number 8 becomes the next digit in our result. 
Result so far: 15928.0
Subtracting 4376 from 4603 leaves us with 227.
Fetch the next digit (1) from the dividend, attach it to 227 and continue: 2271 / 547

Step 8:
547 can be fit into 2271 4 times, resulting in a remainder of 83.
Record the quotient 4 as the next digit in the result. 
Result so far: 159284.0
Subtracting 2188 from 2271 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 9:
When dividing 830 by 547, we get 1 with a remainder of 283.
Record the quotient 1 as the next digit in the result. 
Result so far: 159284.1
The remainder is 283 after subtracting 547 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Let's proceed to step 10:
When dividing 2830 by 547, we get 5 with a remainder of 95.
Use 5 as the next digit of our solution. 
Result so far: 159284.15
If we subtract 2735 from 2830, we get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Moving on to step 11:
If we divide 950 by 547, we get 1 and a remainder of 403.
Put 1 as the next digit of the answer. 
Result so far: 159284.151
If we subtract 547 from 950, we get 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Moving on to step 12:
4030 divided by 547 is 7 with a remainder of 201.
Use 7 as the next digit of our solution. 
Result so far: 159284.1517
Subtract 3829 from 4030 to get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Advancing to step 13:
547 can be fit into 2010 3 times, resulting in a remainder of 369.
Write down 3 as next digit of the result. 
Result so far: 159284.15173
If we take 1641 away from 2010, we end up with 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Advancing to step 14:
When dividing 3690 by 547, we get 6 with a remainder of 408.
Put 6 as the next digit of the answer. 
Result so far: 159284.151736
Subtract 3282 from 3690 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Moving on to step 15:
547 can be fit into 4080 7 times, resulting in a remainder of 251.
Use 7 as the next digit of our solution. 
Result so far: 159284.1517367
Subtracting 3829 from 4080 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Going ahead to step 16:
The number 547 fits into 2510 4 times, leaving a remainder of 322.
The number 4 becomes the next digit in our result. 
Result so far: 159284.15173674
If we take 2188 away from 2510, we end up with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

The final outcome is 159284.15173674, with a leftover of 3.22e-07.