65858768 ÷ 513 
The aim is to understand the frequency of 513 in 65858768.

On to step 1:
The number 513 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 513

Going ahead to step 2:
The number 513 fits into 65 0 times, leaving a remainder of 65.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Take the next digit (8) from the dividend and append it to 65, then repeat: 658 / 513

Step 3:
The number 513 fits into 658 1 times, leaving a remainder of 145.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 145 after subtracting 513 from 658.
Append the next digit (5) from the dividend to 145 and continue with: 1455 / 513

Moving on to step 4:
513 goes into 1455 2 times with a remainder of 429.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 1026 from 1455 leaves us with 429.
Include the next digit (8) from the dividend after 429, then repeat: 4298 / 513

Going ahead to step 5:
When dividing 4298 by 513, we get 8 with a remainder of 194.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Subtracting 4104 from 4298 leaves us with 194.
Take the next digit (7) from the dividend and append it to 194, then repeat: 1947 / 513

Moving on to step 6:
1947 divided by 513 is 3 with a remainder of 408.
Put 3 as the next digit of the answer. 
Result so far: 1283.0
The remainder is 408 after subtracting 1539 from 1947.
Fetch the next digit (6) from the dividend, attach it to 408 and continue: 4086 / 513

Advancing to step 7:
513 can be fit into 4086 7 times, resulting in a remainder of 495.
Use 7 as the next digit of our solution. 
Result so far: 12837.0
If we take 3591 away from 4086, we end up with 495.
Fetch the next digit (8) from the dividend, attach it to 495 and continue: 4958 / 513

Going ahead to step 8:
If we divide 4958 by 513, we get 9 and a remainder of 341.
The number 9 becomes the next digit in our result. 
Result so far: 128379.0
The remainder is 341 after subtracting 4617 from 4958.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Step 9:
513 can be fit into 3410 6 times, resulting in a remainder of 332.
The number 6 becomes the next digit in our result. 
Result so far: 128379.6
If we subtract 3078 from 3410, we get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

On to step 10:
513 can be fit into 3320 6 times, resulting in a remainder of 242.
Write down 6 as next digit of the result. 
Result so far: 128379.66
If we take 3078 away from 3320, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

After the division, we end up with 128379.66 and a remainder of 0.242.