Let's divide 45850538 by 520
The aim is to understand the frequency of 520 in 45850538.

Advancing to step 1:
520 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 520

Going ahead to step 2:
When dividing 45 by 520, we get 0 with a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Bring next digit (8) of the dividend behind the 45 and repeat the process: 458 / 520

On to step 3:
If we divide 458 by 520, we get 0 and a remainder of 458.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 458 leaves us with 458.
Append the next digit (5) from the dividend to 458 and continue with: 4585 / 520

On to step 4:
520 can be fit into 4585 8 times, resulting in a remainder of 425.
The next digit of our result is 8. 
Result so far: 8.0
Deduct 4160 from 4585 and we're left with 425.
Fetch the next digit (0) from the dividend, attach it to 425 and continue: 4250 / 520

Going ahead to step 5:
520 can be fit into 4250 8 times, resulting in a remainder of 90.
Write down 8 as next digit of the result. 
Result so far: 88.0
If we subtract 4160 from 4250, we get 90.
Bring next digit (5) of the dividend behind the 90 and repeat the process: 905 / 520

Advancing to step 6:
The number 520 fits into 905 1 times, leaving a remainder of 385.
Record the quotient 1 as the next digit in the result. 
Result so far: 881.0
Subtract 520 from 905 to get 385.
Take the next digit (3) from the dividend and append it to 385, then repeat: 3853 / 520

On to step 7:
When dividing 3853 by 520, we get 7 with a remainder of 213.
Write down 7 as next digit of the result. 
Result so far: 8817.0
If we take 3640 away from 3853, we end up with 213.
Grab the next digit (8) from the dividend, add it to 213, then carry on: 2138 / 520

Step 8:
520 goes into 2138 4 times with a remainder of 58.
Put 4 as the next digit of the answer. 
Result so far: 88174.0
Subtract 2080 from 2138 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
520 goes into 580 1 times with a remainder of 60.
Put 1 as the next digit of the answer. 
Result so far: 88174.1
Subtract 520 from 580 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 10:
520 can be fit into 600 1 times, resulting in a remainder of 80.
Use 1 as the next digit of our solution. 
Result so far: 88174.11
Subtract 520 from 600 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

After the division, we end up with 88174.11 and a remainder of 0.08.