Let's divide 63015903 by 510
The aim is to understand the frequency of 510 in 63015903.

Going ahead to step 1:
6 divided by 510 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 510

On to step 2:
If we divide 63 by 510, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Include the next digit (0) from the dividend after 63, then repeat: 630 / 510

Step 3:
510 goes into 630 1 times with a remainder of 120.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 510 away from 630, we end up with 120.
Include the next digit (1) from the dividend after 120, then repeat: 1201 / 510

Moving on to step 4:
510 goes into 1201 2 times with a remainder of 181.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 1020 from 1201 to get 181.
Include the next digit (5) from the dividend after 181, then repeat: 1815 / 510

On to step 5:
510 can be fit into 1815 3 times, resulting in a remainder of 285.
Use 3 as the next digit of our solution. 
Result so far: 123.0
The remainder is 285 after subtracting 1530 from 1815.
Take the next digit (9) from the dividend and append it to 285, then repeat: 2859 / 510

Let's proceed to step 6:
If we divide 2859 by 510, we get 5 and a remainder of 309.
The number 5 becomes the next digit in our result. 
Result so far: 1235.0
Deduct 2550 from 2859 and we're left with 309.
Bring next digit (0) of the dividend behind the 309 and repeat the process: 3090 / 510

Advancing to step 7:
If we divide 3090 by 510, we get 6 and a remainder of 30.
Write down 6 as next digit of the result. 
Result so far: 12356.0
Subtract 3060 from 3090 to get 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 510

On to step 8:
The number 510 fits into 303 0 times, leaving a remainder of 303.
The next digit of our result is 0. 
Result so far: 123560.0
If we subtract 0 from 303, we get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Let's proceed to step 9:
When dividing 3030 by 510, we get 5 with a remainder of 480.
Use 5 as the next digit of our solution. 
Result so far: 123560.5
Subtract 2550 from 3030 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 10:
4800 divided by 510 is 9 with a remainder of 210.
Write down 9 as next digit of the result. 
Result so far: 123560.59
If we take 4590 away from 4800, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 11:
When dividing 2100 by 510, we get 4 with a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 123560.594
If we take 2040 away from 2100, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
510 can be fit into 600 1 times, resulting in a remainder of 90.
Use 1 as the next digit of our solution. 
Result so far: 123560.5941
Subtracting 510 from 600 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 13:
The number 510 fits into 900 1 times, leaving a remainder of 390.
The number 1 becomes the next digit in our result. 
Result so far: 123560.59411
The remainder is 390 after subtracting 510 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

After the division, we end up with 123560.59411 and a remainder of 0.00039.