We look at the division of 22178906 by 520 
The aim is to understand the frequency of 520 in 22178906.

Advancing to step 1:
520 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 520

Let's proceed to step 2:
The number 520 fits into 22 0 times, leaving a remainder of 22.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 22, we get 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 520

Going ahead to step 3:
If we divide 221 by 520, we get 0 and a remainder of 221.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 221 leaves us with 221.
Fetch the next digit (7) from the dividend, attach it to 221 and continue: 2217 / 520

On to step 4:
2217 divided by 520 is 4 with a remainder of 137.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 2080 from 2217 and we're left with 137.
Bring next digit (8) of the dividend behind the 137 and repeat the process: 1378 / 520

Moving on to step 5:
520 goes into 1378 2 times with a remainder of 338.
Put 2 as the next digit of the answer. 
Result so far: 42.0
If we take 1040 away from 1378, we end up with 338.
Fetch the next digit (9) from the dividend, attach it to 338 and continue: 3389 / 520

Going ahead to step 6:
The number 520 fits into 3389 6 times, leaving a remainder of 269.
Write down 6 as next digit of the result. 
Result so far: 426.0
Subtract 3120 from 3389 to get 269.
Fetch the next digit (0) from the dividend, attach it to 269 and continue: 2690 / 520

Let's proceed to step 7:
If we divide 2690 by 520, we get 5 and a remainder of 90.
Use 5 as the next digit of our solution. 
Result so far: 4265.0
Deduct 2600 from 2690 and we're left with 90.
Include the next digit (6) from the dividend after 90, then repeat: 906 / 520

Moving on to step 8:
906 divided by 520 is 1 with a remainder of 386.
The number 1 becomes the next digit in our result. 
Result so far: 42651.0
Deduct 520 from 906 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 9:
520 goes into 3860 7 times with a remainder of 220.
Record the quotient 7 as the next digit in the result. 
Result so far: 42651.7
Subtracting 3640 from 3860 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 10:
When dividing 2200 by 520, we get 4 with a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 42651.74
Subtract 2080 from 2200 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 11:
When dividing 1200 by 520, we get 2 with a remainder of 160.
The number 2 becomes the next digit in our result. 
Result so far: 42651.742
Subtracting 1040 from 1200 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 12:
If we divide 1600 by 520, we get 3 and a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 42651.7423
If we subtract 1560 from 1600, we get 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:
520 can be fit into 400 0 times, resulting in a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 42651.7423
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 14:
520 goes into 4000 7 times with a remainder of 360.
Use 7 as the next digit of our solution. 
Result so far: 42651.742307
Subtract 3640 from 4000 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 15:
When dividing 3600 by 520, we get 6 with a remainder of 480.
The number 6 becomes the next digit in our result. 
Result so far: 42651.7423076
If we take 3120 away from 3600, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 16:
The number 520 fits into 4800 9 times, leaving a remainder of 120.
Record the quotient 9 as the next digit in the result. 
Result so far: 42651.74230769
If we take 4680 away from 4800, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 42651.74230769 with a remaining 1.2e-07.