64590629 ÷ 510 
The aim is to understand the frequency of 510 in 64590629.

On to step 1:
6 divided by 510 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 510

Advancing to step 2:
If we divide 64 by 510, we get 0 and a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (5) from the dividend after 64, then repeat: 645 / 510

On to step 3:
645 divided by 510 is 1 with a remainder of 135.
The next digit of our result is 1. 
Result so far: 1.0
If we take 510 away from 645, we end up with 135.
Append the next digit (9) from the dividend to 135 and continue with: 1359 / 510

Step 4:
510 can be fit into 1359 2 times, resulting in a remainder of 339.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 1020 from 1359, we get 339.
Grab the next digit (0) from the dividend, add it to 339, then carry on: 3390 / 510

Going ahead to step 5:
510 can be fit into 3390 6 times, resulting in a remainder of 330.
Put 6 as the next digit of the answer. 
Result so far: 126.0
Deduct 3060 from 3390 and we're left with 330.
Fetch the next digit (6) from the dividend, attach it to 330 and continue: 3306 / 510

Going ahead to step 6:
The number 510 fits into 3306 6 times, leaving a remainder of 246.
The number 6 becomes the next digit in our result. 
Result so far: 1266.0
Subtracting 3060 from 3306 leaves us with 246.
Append the next digit (2) from the dividend to 246 and continue with: 2462 / 510

On to step 7:
The number 510 fits into 2462 4 times, leaving a remainder of 422.
The number 4 becomes the next digit in our result. 
Result so far: 12664.0
Subtract 2040 from 2462 to get 422.
Fetch the next digit (9) from the dividend, attach it to 422 and continue: 4229 / 510

Advancing to step 8:
When dividing 4229 by 510, we get 8 with a remainder of 149.
Put 8 as the next digit of the answer. 
Result so far: 126648.0
If we subtract 4080 from 4229, we get 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Moving on to step 9:
If we divide 1490 by 510, we get 2 and a remainder of 470.
The next digit of our result is 2. 
Result so far: 126648.2
If we subtract 1020 from 1490, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Moving on to step 10:
510 can be fit into 4700 9 times, resulting in a remainder of 110.
The number 9 becomes the next digit in our result. 
Result so far: 126648.29
Deduct 4590 from 4700 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 11:
The number 510 fits into 1100 2 times, leaving a remainder of 80.
Write down 2 as next digit of the result. 
Result so far: 126648.292
If we subtract 1020 from 1100, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 12:
510 can be fit into 800 1 times, resulting in a remainder of 290.
Record the quotient 1 as the next digit in the result. 
Result so far: 126648.2921
Subtracting 510 from 800 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Let's proceed to step 13:
The number 510 fits into 2900 5 times, leaving a remainder of 350.
Write down 5 as next digit of the result. 
Result so far: 126648.29215
If we take 2550 away from 2900, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 14:
3500 divided by 510 is 6 with a remainder of 440.
Put 6 as the next digit of the answer. 
Result so far: 126648.292156
Subtract 3060 from 3500 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 15:
If we divide 4400 by 510, we get 8 and a remainder of 320.
Write down 8 as next digit of the result. 
Result so far: 126648.2921568
Subtracting 4080 from 4400 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 16:
When dividing 3200 by 510, we get 6 with a remainder of 140.
The number 6 becomes the next digit in our result. 
Result so far: 126648.29215686
Deduct 3060 from 3200 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

In conclusion, the division gives 126648.29215686 with a balance of 1.4e-07.