8918145 ÷ 520 
The aim is to understand the frequency of 520 in 8918145.

Advancing to step 1:
8 divided by 520 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 520

Advancing to step 2:
When dividing 89 by 520, we get 0 with a remainder of 89.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 89 after subtracting 0 from 89.
Include the next digit (1) from the dividend after 89, then repeat: 891 / 520

Going ahead to step 3:
891 divided by 520 is 1 with a remainder of 371.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 520 from 891 and we're left with 371.
Include the next digit (8) from the dividend after 371, then repeat: 3718 / 520

Let's proceed to step 4:
If we divide 3718 by 520, we get 7 and a remainder of 78.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 3640 from 3718, we get 78.
Grab the next digit (1) from the dividend, add it to 78, then carry on: 781 / 520

On to step 5:
781 divided by 520 is 1 with a remainder of 261.
The number 1 becomes the next digit in our result. 
Result so far: 171.0
Deduct 520 from 781 and we're left with 261.
Take the next digit (4) from the dividend and append it to 261, then repeat: 2614 / 520

Step 6:
520 goes into 2614 5 times with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 1715.0
If we take 2600 away from 2614, we end up with 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 520

Moving on to step 7:
145 divided by 520 is 0 with a remainder of 145.
The next digit of our result is 0. 
Result so far: 17150.0
If we subtract 0 from 145, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 8:
If we divide 1450 by 520, we get 2 and a remainder of 410.
The next digit of our result is 2. 
Result so far: 17150.2
If we take 1040 away from 1450, we end up with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Moving on to step 9:
If we divide 4100 by 520, we get 7 and a remainder of 460.
Put 7 as the next digit of the answer. 
Result so far: 17150.27
Subtract 3640 from 4100 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 10:
The number 520 fits into 4600 8 times, leaving a remainder of 440.
The number 8 becomes the next digit in our result. 
Result so far: 17150.278
If we subtract 4160 from 4600, we get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Going ahead to step 11:
520 goes into 4400 8 times with a remainder of 240.
Put 8 as the next digit of the answer. 
Result so far: 17150.2788
Deduct 4160 from 4400 and we're left 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.

In conclusion, the division gives 17150.2788 with a balance of 0.0024.