78518855 divided by 511 
The aim is to understand the frequency of 511 in 78518855.

Step 1:
511 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 511

Going ahead to step 2:
The number 511 fits into 78 0 times, leaving a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Include the next digit (5) from the dividend after 78, then repeat: 785 / 511

Advancing to step 3:
511 goes into 785 1 times with a remainder of 274.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 511 from 785, we get 274.
Fetch the next digit (1) from the dividend, attach it to 274 and continue: 2741 / 511

Advancing to step 4:
If we divide 2741 by 511, we get 5 and a remainder of 186.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 186 after subtracting 2555 from 2741.
Append the next digit (8) from the dividend to 186 and continue with: 1868 / 511

Moving on to step 5:
The number 511 fits into 1868 3 times, leaving a remainder of 335.
The next digit of our result is 3. 
Result so far: 153.0
The remainder is 335 after subtracting 1533 from 1868.
Bring next digit (8) of the dividend behind the 335 and repeat the process: 3358 / 511

Step 6:
If we divide 3358 by 511, we get 6 and a remainder of 292.
Write down 6 as next digit of the result. 
Result so far: 1536.0
Deduct 3066 from 3358 and we're left with 292.
Append the next digit (5) from the dividend to 292 and continue with: 2925 / 511

Moving on to step 7:
If we divide 2925 by 511, we get 5 and a remainder of 370.
Put 5 as the next digit of the answer. 
Result so far: 15365.0
The remainder is 370 after subtracting 2555 from 2925.
Take the next digit (5) from the dividend and append it to 370, then repeat: 3705 / 511

Let's proceed to step 8:
If we divide 3705 by 511, we get 7 and a remainder of 128.
The next digit of our result is 7. 
Result so far: 153657.0
Deduct 3577 from 3705 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 9:
If we divide 1280 by 511, we get 2 and a remainder of 258.
The number 2 becomes the next digit in our result. 
Result so far: 153657.2
If we subtract 1022 from 1280, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 10:
511 can be fit into 2580 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 153657.25
If we take 2555 away from 2580, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 11:
The number 511 fits into 250 0 times, leaving a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 153657.25
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 12:
If we divide 2500 by 511, we get 4 and a remainder of 456.
The number 4 becomes the next digit in our result. 
Result so far: 153657.2504
Subtracting 2044 from 2500 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 13:
When dividing 4560 by 511, we get 8 with a remainder of 472.
The next digit of our result is 8. 
Result so far: 153657.25048
Subtracting 4088 from 4560 leaves us with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Going ahead to step 14:
If we divide 4720 by 511, we get 9 and a remainder of 121.
Use 9 as the next digit of our solution. 
Result so far: 153657.250489
Subtract 4599 from 4720 to get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Moving on to step 15:
511 goes into 1210 2 times with a remainder of 188.
The next digit of our result is 2. 
Result so far: 153657.2504892
If we take 1022 away from 1210, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Advancing to step 16:
511 goes into 1880 3 times with a remainder of 347.
Use 3 as the next digit of our solution. 
Result so far: 153657.25048923
If we subtract 1533 from 1880, we get 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

The quotient of the division is 153657.25048923, and the remainder is 3.47e-07.