We look at the division of 64008550 by 510 
The aim is to understand the frequency of 510 in 64008550.

On to step 1:
If we divide 6 by 510, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 510

On to step 2:
510 can be fit into 64 0 times, resulting in a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Grab the next digit (0) from the dividend, add it to 64, then carry on: 640 / 510

Advancing to step 3:
510 can be fit into 640 1 times, resulting in a remainder of 130.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 510 from 640 and we're left with 130.
Take the next digit (0) from the dividend and append it to 130, then repeat: 1300 / 510

On to step 4:
1300 divided by 510 is 2 with a remainder of 280.
The next digit of our result is 2. 
Result so far: 12.0
If we take 1020 away from 1300, we end up with 280.
Grab the next digit (8) from the dividend, add it to 280, then carry on: 2808 / 510

Let's proceed to step 5:
510 goes into 2808 5 times with a remainder of 258.
The next digit of our result is 5. 
Result so far: 125.0
Subtract 2550 from 2808 to get 258.
Bring next digit (5) of the dividend behind the 258 and repeat the process: 2585 / 510

Moving on to step 6:
510 goes into 2585 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 1255.0
Deduct 2550 from 2585 and we're left with 35.
Take the next digit (5) from the dividend and append it to 35, then repeat: 355 / 510

Step 7:
If we divide 355 by 510, we get 0 and a remainder of 355.
The number 0 becomes the next digit in our result. 
Result so far: 12550.0
If we take 0 away from 355, we end up with 355.
Fetch the next digit (0) from the dividend, attach it to 355 and continue: 3550 / 510

Going ahead to step 8:
If we divide 3550 by 510, we get 6 and a remainder of 490.
Write down 6 as next digit of the result. 
Result so far: 125506.0
Deduct 3060 from 3550 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Step 9:
510 goes into 4900 9 times with a remainder of 310.
Write down 9 as next digit of the result. 
Result so far: 125506.9
Subtract 4590 from 4900 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 10:
510 goes into 3100 6 times with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 125506.96
Subtracting 3060 from 3100 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
510 goes into 400 0 times with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 125506.96
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 12:
If we divide 4000 by 510, we get 7 and a remainder of 430.
Use 7 as the next digit of our solution. 
Result so far: 125506.9607
If we subtract 3570 from 4000, we get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 13:
4300 divided by 510 is 8 with a remainder of 220.
Put 8 as the next digit of the answer. 
Result so far: 125506.96078
If we subtract 4080 from 4300, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 14:
If we divide 2200 by 510, we get 4 and a remainder of 160.
Put 4 as the next digit of the answer. 
Result so far: 125506.960784
Subtracting 2040 from 2200 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 15:
The number 510 fits into 1600 3 times, leaving a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 125506.9607843
If we take 1530 away from 1600, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 16:
When dividing 700 by 510, we get 1 with a remainder of 190.
The number 1 becomes the next digit in our result. 
Result so far: 125506.96078431
Deduct 510 from 700 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

The quotient of the division is 125506.96078431, and the remainder is 1.9e-07.