Let's divide 12837064 by 515
The aim is to understand the frequency of 515 in 12837064.

Moving on to step 1:
The number 515 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 515

Moving on to step 2:
The number 515 fits into 12 0 times, leaving a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 515

Advancing to step 3:
When dividing 128 by 515, we get 0 with a remainder of 128.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 128 to get 128.
Include the next digit (3) from the dividend after 128, then repeat: 1283 / 515

Step 4:
1283 divided by 515 is 2 with a remainder of 253.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1030 from 1283 and we're left with 253.
Include the next digit (7) from the dividend after 253, then repeat: 2537 / 515

Step 5:
2537 divided by 515 is 4 with a remainder of 477.
The next digit of our result is 4. 
Result so far: 24.0
Subtract 2060 from 2537 to get 477.
Fetch the next digit (0) from the dividend, attach it to 477 and continue: 4770 / 515

Moving on to step 6:
515 goes into 4770 9 times with a remainder of 135.
Use 9 as the next digit of our solution. 
Result so far: 249.0
If we subtract 4635 from 4770, we get 135.
Append the next digit (6) from the dividend to 135 and continue with: 1356 / 515

Going ahead to step 7:
515 goes into 1356 2 times with a remainder of 326.
Put 2 as the next digit of the answer. 
Result so far: 2492.0
Subtracting 1030 from 1356 leaves us with 326.
Append the next digit (4) from the dividend to 326 and continue with: 3264 / 515

Going ahead to step 8:
If we divide 3264 by 515, we get 6 and a remainder of 174.
The next digit of our result is 6. 
Result so far: 24926.0
The remainder is 174 after subtracting 3090 from 3264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 9:
If we divide 1740 by 515, we get 3 and a remainder of 195.
Put 3 as the next digit of the answer. 
Result so far: 24926.3
Subtract 1545 from 1740 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Moving on to step 10:
515 can be fit into 1950 3 times, resulting in a remainder of 405.
Write down 3 as next digit of the result. 
Result so far: 24926.33
If we take 1545 away from 1950, we end up with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

After the division, we end up with 24926.33 and a remainder of 0.405.