We're dividing 80518280 by 511 
The aim is to understand the frequency of 511 in 80518280.

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
Subtract 0 from 8 to get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 511

Moving on to step 2:
If we divide 80 by 511, we get 0 and a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 511

Step 3:
When dividing 805 by 511, we get 1 with a remainder of 294.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 511 from 805 and we're left with 294.
Bring next digit (1) of the dividend behind the 294 and repeat the process: 2941 / 511

Going ahead to step 4:
If we divide 2941 by 511, we get 5 and a remainder of 386.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 2555 from 2941 to get 386.
Grab the next digit (8) from the dividend, add it to 386, then carry on: 3868 / 511

Advancing to step 5:
If we divide 3868 by 511, we get 7 and a remainder of 291.
Use 7 as the next digit of our solution. 
Result so far: 157.0
Deduct 3577 from 3868 and we're left with 291.
Fetch the next digit (2) from the dividend, attach it to 291 and continue: 2912 / 511

On to step 6:
2912 divided by 511 is 5 with a remainder of 357.
Record the quotient 5 as the next digit in the result. 
Result so far: 1575.0
Subtract 2555 from 2912 to get 357.
Append the next digit (8) from the dividend to 357 and continue with: 3578 / 511

Advancing to step 7:
If we divide 3578 by 511, we get 7 and a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 15757.0
Deduct 3577 from 3578 and we're left with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 511

Let's proceed to step 8:
The number 511 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 157570.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
When dividing 100 by 511, we get 0 with a remainder of 100.
The next digit of our result is 0. 
Result so far: 157570.0
If we take 0 away from 100, 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.

Advancing to step 10:
1000 divided by 511 is 1 with a remainder of 489.
The number 1 becomes the next digit in our result. 
Result so far: 157570.01
The remainder is 489 after subtracting 511 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Moving on to step 11:
The number 511 fits into 4890 9 times, leaving a remainder of 291.
Use 9 as the next digit of our solution. 
Result so far: 157570.019
The remainder is 291 after subtracting 4599 from 4890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Going ahead to step 12:
511 goes into 2910 5 times with a remainder of 355.
The next digit of our result is 5. 
Result so far: 157570.0195
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.

Going ahead to step 13:
3550 divided by 511 is 6 with a remainder of 484.
Put 6 as the next digit of the answer. 
Result so far: 157570.01956
If we subtract 3066 from 3550, we 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.

Advancing to step 14:
511 can be fit into 4840 9 times, resulting in a remainder of 241.
Put 9 as the next digit of the answer. 
Result so far: 157570.019569
The remainder is 241 after subtracting 4599 from 4840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Let's proceed to step 15:
2410 divided by 511 is 4 with a remainder of 366.
The number 4 becomes the next digit in our result. 
Result so far: 157570.0195694
Deduct 2044 from 2410 and we're left 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.

Let's proceed to step 16:
The number 511 fits into 3660 7 times, leaving a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 157570.01956947
The remainder is 83 after subtracting 3577 from 3660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Our division results in 157570.01956947 with a remaining 8.3e-08.