We look at the division of 520538 by 76 
The aim is to understand the frequency of 76 in 520538.

Advancing to step 1:
76 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 76

Moving on to step 2:
If we divide 52 by 76, we get 0 and a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Bring next digit (0) of the dividend behind the 52 and repeat the process: 520 / 76

On to step 3:
When dividing 520 by 76, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 456 from 520, we get 64.
Append the next digit (5) from the dividend to 64 and continue with: 645 / 76

On to step 4:
When dividing 645 by 76, we get 8 with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 68.0
Deduct 608 from 645 and we're left with 37.
Include the next digit (3) from the dividend after 37, then repeat: 373 / 76

Let's proceed to step 5:
If we divide 373 by 76, we get 4 and a remainder of 69.
Use 4 as the next digit of our solution. 
Result so far: 684.0
If we subtract 304 from 373, we get 69.
Grab the next digit (8) from the dividend, add it to 69, then carry on: 698 / 76

Let's proceed to step 6:
The number 76 fits into 698 9 times, leaving a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 6849.0
Subtracting 684 from 698 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
When dividing 140 by 76, we get 1 with a remainder of 64.
The number 1 becomes the next digit in our result. 
Result so far: 6849.1
If we take 76 away from 140, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 8:
640 divided by 76 is 8 with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 6849.18
If we subtract 608 from 640, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 9:
76 goes into 320 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 6849.184
Subtract 304 from 320 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
76 goes into 160 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 6849.1842
If we subtract 152 from 160, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
The number 76 fits into 80 1 times, leaving a remainder of 4.
The next digit of our result is 1. 
Result so far: 6849.18421
If we take 76 away from 80, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
40 divided by 76 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 6849.18421
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 13:
When dividing 400 by 76, we get 5 with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 6849.1842105
If we take 380 away from 400, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
76 can be fit into 200 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 6849.18421052
Deduct 152 from 200 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 6849.18421052 with a remainder of 4.8e-08.