We're dividing 65104263 by 513 
The aim is to understand the frequency of 513 in 65104263.

Let's proceed to step 1:
6 divided by 513 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 513

Advancing to step 2:
513 can be fit into 65 0 times, resulting in a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Grab the next digit (1) from the dividend, add it to 65, then carry on: 651 / 513

Going ahead to step 3:
513 goes into 651 1 times with a remainder of 138.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 513 from 651 leaves us with 138.
Include the next digit (0) from the dividend after 138, then repeat: 1380 / 513

Going ahead to step 4:
1380 divided by 513 is 2 with a remainder of 354.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 354 after subtracting 1026 from 1380.
Grab the next digit (4) from the dividend, add it to 354, then carry on: 3544 / 513

Step 5:
3544 divided by 513 is 6 with a remainder of 466.
Use 6 as the next digit of our solution. 
Result so far: 126.0
Subtract 3078 from 3544 to get 466.
Include the next digit (2) from the dividend after 466, then repeat: 4662 / 513

Moving on to step 6:
The number 513 fits into 4662 9 times, leaving a remainder of 45.
Use 9 as the next digit of our solution. 
Result so far: 1269.0
If we take 4617 away from 4662, we end up with 45.
Include the next digit (6) from the dividend after 45, then repeat: 456 / 513

Advancing to step 7:
513 goes into 456 0 times with a remainder of 456.
Write down 0 as next digit of the result. 
Result so far: 12690.0
If we take 0 away from 456, we end up with 456.
Bring next digit (3) of the dividend behind the 456 and repeat the process: 4563 / 513

On to step 8:
513 goes into 4563 8 times with a remainder of 459.
The number 8 becomes the next digit in our result. 
Result so far: 126908.0
If we subtract 4104 from 4563, we get 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

Step 9:
513 goes into 4590 8 times with a remainder of 486.
The next digit of our result is 8. 
Result so far: 126908.8
If we take 4104 away from 4590, we end up with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Going ahead to step 10:
If we divide 4860 by 513, we get 9 and a remainder of 243.
The next digit of our result is 9. 
Result so far: 126908.89
The remainder is 243 after subtracting 4617 from 4860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

On to step 11:
If we divide 2430 by 513, we get 4 and a remainder of 378.
Record the quotient 4 as the next digit in the result. 
Result so far: 126908.894
The remainder is 378 after subtracting 2052 from 2430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

On to step 12:
The number 513 fits into 3780 7 times, leaving a remainder of 189.
Use 7 as the next digit of our solution. 
Result so far: 126908.8947
If we subtract 3591 from 3780, we get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Step 13:
513 can be fit into 1890 3 times, resulting in a remainder of 351.
Write down 3 as next digit of the result. 
Result so far: 126908.89473
Subtracting 1539 from 1890 leaves us with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Advancing to step 14:
If we divide 3510 by 513, we get 6 and a remainder of 432.
Use 6 as the next digit of our solution. 
Result so far: 126908.894736
If we subtract 3078 from 3510, we get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Advancing to step 15:
4320 divided by 513 is 8 with a remainder of 216.
Put 8 as the next digit of the answer. 
Result so far: 126908.8947368
Subtract 4104 from 4320 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 16:
2160 divided by 513 is 4 with a remainder of 108.
The next digit of our result is 4. 
Result so far: 126908.89473684
If we subtract 2052 from 2160, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

After the division, we end up with 126908.89473684 and a remainder of 1.08e-07.