Let's divide 87243008 by 511
The aim is to understand the frequency of 511 in 87243008.

On to step 1:
If we divide 8 by 511, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 511

Step 2:
When dividing 87 by 511, we get 0 with a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Append the next digit (2) from the dividend to 87 and continue with: 872 / 511

Going ahead to step 3:
511 can be fit into 872 1 times, resulting in a remainder of 361.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 511 from 872 leaves us with 361.
Bring next digit (4) of the dividend behind the 361 and repeat the process: 3614 / 511

Advancing to step 4:
The number 511 fits into 3614 7 times, leaving a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtract 3577 from 3614 to get 37.
Append the next digit (3) from the dividend to 37 and continue with: 373 / 511

Advancing to step 5:
511 can be fit into 373 0 times, resulting in a remainder of 373.
The number 0 becomes the next digit in our result. 
Result so far: 170.0
Deduct 0 from 373 and we're left with 373.
Append the next digit (0) from the dividend to 373 and continue with: 3730 / 511

Moving on to step 6:
511 goes into 3730 7 times with a remainder of 153.
Write down 7 as next digit of the result. 
Result so far: 1707.0
Subtract 3577 from 3730 to get 153.
Append the next digit (0) from the dividend to 153 and continue with: 1530 / 511

Step 7:
511 can be fit into 1530 2 times, resulting in a remainder of 508.
Use 2 as the next digit of our solution. 
Result so far: 17072.0
If we take 1022 away from 1530, we end up with 508.
Append the next digit (8) from the dividend to 508 and continue with: 5088 / 511

Advancing to step 8:
511 can be fit into 5088 9 times, resulting in a remainder of 489.
Use 9 as the next digit of our solution. 
Result so far: 170729.0
If we subtract 4599 from 5088, we get 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Step 9:
511 can be fit into 4890 9 times, resulting in a remainder of 291.
The number 9 becomes the next digit in our result. 
Result so far: 170729.9
Subtract 4599 from 4890 to get 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Step 10:
The number 511 fits into 2910 5 times, leaving a remainder of 355.
The next digit of our result is 5. 
Result so far: 170729.95
If we subtract 2555 from 2910, we get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Step 11:
511 goes into 3550 6 times with a remainder of 484.
Record the quotient 6 as the next digit in the result. 
Result so far: 170729.956
Subtract 3066 from 3550 to get 484.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

Moving on to step 12:
If we divide 4840 by 511, we get 9 and a remainder of 241.
Record the quotient 9 as the next digit in the result. 
Result so far: 170729.9569
If we take 4599 away from 4840, we end up with 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Going ahead to step 13:
511 can be fit into 2410 4 times, resulting in a remainder of 366.
The next digit of our result is 4. 
Result so far: 170729.95694
If we take 2044 away from 2410, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 14:
511 goes into 3660 7 times with a remainder of 83.
The number 7 becomes the next digit in our result. 
Result so far: 170729.956947
Subtract 3577 from 3660 to get 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 15:
If we divide 830 by 511, we get 1 and a remainder of 319.
Use 1 as the next digit of our solution. 
Result so far: 170729.9569471
If we subtract 511 from 830, we get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

On to step 16:
511 can be fit into 3190 6 times, resulting in a remainder of 124.
The next digit of our result is 6. 
Result so far: 170729.95694716
Subtract 3066 from 3190 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

The final outcome is 170729.95694716, with a leftover of 1.24e-07.