15627424 ÷ 520 
The aim is to understand the frequency of 520 in 15627424.

Advancing to step 1:
1 divided by 520 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 520

Going ahead to step 2:
When dividing 15 by 520, we get 0 with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 520

Moving on to step 3:
156 divided by 520 is 0 with a remainder of 156.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 156, we get 156.
Include the next digit (2) from the dividend after 156, then repeat: 1562 / 520

Moving on to step 4:
520 goes into 1562 3 times with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1560 from 1562, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 520

Let's proceed to step 5:
27 divided by 520 is 0 with a remainder of 27.
The next digit of our result is 0. 
Result so far: 30.0
Subtract 0 from 27 to get 27.
Fetch the next digit (4) from the dividend, attach it to 27 and continue: 274 / 520

Advancing to step 6:
If we divide 274 by 520, we get 0 and a remainder of 274.
The number 0 becomes the next digit in our result. 
Result so far: 300.0
If we take 0 away from 274, we end up with 274.
Include the next digit (2) from the dividend after 274, then repeat: 2742 / 520

Going ahead to step 7:
When dividing 2742 by 520, we get 5 with a remainder of 142.
Put 5 as the next digit of the answer. 
Result so far: 3005.0
Subtracting 2600 from 2742 leaves us with 142.
Grab the next digit (4) from the dividend, add it to 142, then carry on: 1424 / 520

Step 8:
520 can be fit into 1424 2 times, resulting in a remainder of 384.
Write down 2 as next digit of the result. 
Result so far: 30052.0
Subtracting 1040 from 1424 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 9:
520 goes into 3840 7 times with a remainder of 200.
Write down 7 as next digit of the result. 
Result so far: 30052.7
The remainder is 200 after subtracting 3640 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 10:
The number 520 fits into 2000 3 times, leaving a remainder of 440.
Record the quotient 3 as the next digit in the result. 
Result so far: 30052.73
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.

Going ahead to step 11:
4400 divided by 520 is 8 with a remainder of 240.
The next digit of our result is 8. 
Result so far: 30052.738
The remainder is 240 after subtracting 4160 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 12:
The number 520 fits into 2400 4 times, leaving a remainder of 320.
The number 4 becomes the next digit in our result. 
Result so far: 30052.7384
Subtract 2080 from 2400 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 13:
520 goes into 3200 6 times with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 30052.73846
If we take 3120 away from 3200, we end up 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.

Advancing to step 14:
The number 520 fits into 800 1 times, leaving a remainder of 280.
Write down 1 as next digit of the result. 
Result so far: 30052.738461
If we take 520 away from 800, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 15:
520 goes into 2800 5 times with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 30052.7384615
Subtract 2600 from 2800 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 16:
520 can be fit into 2000 3 times, resulting in a remainder of 440.
The next digit of our result is 3. 
Result so far: 30052.73846153
If we subtract 1560 from 2000, 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.

The final result is 30052.73846153 with a remainder of 4.4e-07.