52124521 divided by 513 
The aim is to understand the frequency of 513 in 52124521.

Advancing to step 1:
When dividing 5 by 513, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 513

Going ahead to step 2:
52 divided by 513 is 0 with a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 513

Going ahead to step 3:
The number 513 fits into 521 1 times, leaving a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 513 from 521 and we're left with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 513

Let's proceed to step 4:
82 divided by 513 is 0 with a remainder of 82.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 82 and we're left with 82.
Grab the next digit (4) from the dividend, add it to 82, then carry on: 824 / 513

Advancing to step 5:
The number 513 fits into 824 1 times, leaving a remainder of 311.
Use 1 as the next digit of our solution. 
Result so far: 101.0
If we take 513 away from 824, we end up with 311.
Fetch the next digit (5) from the dividend, attach it to 311 and continue: 3115 / 513

Moving on to step 6:
When dividing 3115 by 513, we get 6 with a remainder of 37.
Put 6 as the next digit of the answer. 
Result so far: 1016.0
If we subtract 3078 from 3115, we get 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 513

Going ahead to step 7:
513 goes into 372 0 times with a remainder of 372.
Record the quotient 0 as the next digit in the result. 
Result so far: 10160.0
Subtracting 0 from 372 leaves us with 372.
Include the next digit (1) from the dividend after 372, then repeat: 3721 / 513

Going ahead to step 8:
3721 divided by 513 is 7 with a remainder of 130.
Put 7 as the next digit of the answer. 
Result so far: 101607.0
The remainder is 130 after subtracting 3591 from 3721.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 9:
The number 513 fits into 1300 2 times, leaving a remainder of 274.
Put 2 as the next digit of the answer. 
Result so far: 101607.2
If we subtract 1026 from 1300, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 10:
513 can be fit into 2740 5 times, resulting in a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 101607.25
The remainder is 175 after subtracting 2565 from 2740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 11:
513 can be fit into 1750 3 times, resulting in a remainder of 211.
Record the quotient 3 as the next digit in the result. 
Result so far: 101607.253
Subtracting 1539 from 1750 leaves us with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 12:
When dividing 2110 by 513, we get 4 with a remainder of 58.
The next digit of our result is 4. 
Result so far: 101607.2534
The remainder is 58 after subtracting 2052 from 2110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 13:
The number 513 fits into 580 1 times, leaving a remainder of 67.
Put 1 as the next digit of the answer. 
Result so far: 101607.25341
Deduct 513 from 580 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 14:
If we divide 670 by 513, we get 1 and a remainder of 157.
The next digit of our result is 1. 
Result so far: 101607.253411
The remainder is 157 after subtracting 513 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

The quotient of the division is 101607.253411, and the remainder is 1.57e-05.