We look at the division of 51284095 by 520 
The aim is to understand the frequency of 520 in 51284095.

Moving on to step 1:
520 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 520

Step 2:
520 goes into 51 0 times with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 520

Step 3:
512 divided by 520 is 0 with a remainder of 512.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 512, we end up with 512.
Append the next digit (8) from the dividend to 512 and continue with: 5128 / 520

Advancing to step 4:
5128 divided by 520 is 9 with a remainder of 448.
The next digit of our result is 9. 
Result so far: 9.0
If we take 4680 away from 5128, we end up with 448.
Bring next digit (4) of the dividend behind the 448 and repeat the process: 4484 / 520

Moving on to step 5:
520 goes into 4484 8 times with a remainder of 324.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
Subtract 4160 from 4484 to get 324.
Append the next digit (0) from the dividend to 324 and continue with: 3240 / 520

Moving on to step 6:
520 goes into 3240 6 times with a remainder of 120.
Use 6 as the next digit of our solution. 
Result so far: 986.0
Subtracting 3120 from 3240 leaves us with 120.
Include the next digit (9) from the dividend after 120, then repeat: 1209 / 520

Step 7:
520 goes into 1209 2 times with a remainder of 169.
Record the quotient 2 as the next digit in the result. 
Result so far: 9862.0
If we subtract 1040 from 1209, we get 169.
Include the next digit (5) from the dividend after 169, then repeat: 1695 / 520

Going ahead to step 8:
When dividing 1695 by 520, we get 3 with a remainder of 135.
Put 3 as the next digit of the answer. 
Result so far: 98623.0
If we take 1560 away from 1695, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 9:
1350 divided by 520 is 2 with a remainder of 310.
Record the quotient 2 as the next digit in the result. 
Result so far: 98623.2
If we take 1040 away from 1350, we end up with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 10:
The number 520 fits into 3100 5 times, leaving a remainder of 500.
The number 5 becomes the next digit in our result. 
Result so far: 98623.25
If we subtract 2600 from 3100, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 11:
When dividing 5000 by 520, we get 9 with a remainder of 320.
Put 9 as the next digit of the answer. 
Result so far: 98623.259
Subtracting 4680 from 5000 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 12:
When dividing 3200 by 520, we get 6 with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 98623.2596
Deduct 3120 from 3200 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 13:
If we divide 800 by 520, we get 1 and a remainder of 280.
The next digit of our result is 1. 
Result so far: 98623.25961
The remainder is 280 after subtracting 520 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 14:
The number 520 fits into 2800 5 times, leaving a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 98623.259615
If we take 2600 away from 2800, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 15:
2000 divided by 520 is 3 with a remainder of 440.
Put 3 as the next digit of the answer. 
Result so far: 98623.2596153
Subtracting 1560 from 2000 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

On to step 16:
4400 divided by 520 is 8 with a remainder of 240.
Write down 8 as next digit of the result. 
Result so far: 98623.25961538
If we take 4160 away from 4400, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Our division results in 98623.25961538 with a remaining 2.4e-07.