63601920 ÷ 517 
The aim is to understand the frequency of 517 in 63601920.

Step 1:
When dividing 6 by 517, we get 0 with 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.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 517

Step 2:
517 goes into 63 0 times with a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Bring next digit (6) of the dividend behind the 63 and repeat the process: 636 / 517

Step 3:
636 divided by 517 is 1 with a remainder of 119.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 517 from 636 to get 119.
Include the next digit (0) from the dividend after 119, then repeat: 1190 / 517

Moving on to step 4:
The number 517 fits into 1190 2 times, leaving a remainder of 156.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 1034 from 1190, we get 156.
Fetch the next digit (1) from the dividend, attach it to 156 and continue: 1561 / 517

Let's proceed to step 5:
517 can be fit into 1561 3 times, resulting in a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 123.0
The remainder is 10 after subtracting 1551 from 1561.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 517

Going ahead to step 6:
517 can be fit into 109 0 times, resulting in a remainder of 109.
Write down 0 as next digit of the result. 
Result so far: 1230.0
If we take 0 away from 109, we end up with 109.
Fetch the next digit (2) from the dividend, attach it to 109 and continue: 1092 / 517

Step 7:
If we divide 1092 by 517, we get 2 and a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 12302.0
Subtracting 1034 from 1092 leaves us with 58.
Append the next digit (0) from the dividend to 58 and continue with: 580 / 517

Step 8:
If we divide 580 by 517, we get 1 and a remainder of 63.
The next digit of our result is 1. 
Result so far: 123021.0
Subtracting 517 from 580 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 9:
The number 517 fits into 630 1 times, leaving a remainder of 113.
The number 1 becomes the next digit in our result. 
Result so far: 123021.1
If we take 517 away from 630, we end up with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Advancing to step 10:
If we divide 1130 by 517, we get 2 and a remainder of 96.
Use 2 as the next digit of our solution. 
Result so far: 123021.12
The remainder is 96 after subtracting 1034 from 1130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 11:
517 goes into 960 1 times with a remainder of 443.
Record the quotient 1 as the next digit in the result. 
Result so far: 123021.121
Deduct 517 from 960 and we're left with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Step 12:
4430 divided by 517 is 8 with a remainder of 294.
Put 8 as the next digit of the answer. 
Result so far: 123021.1218
If we subtract 4136 from 4430, we get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 13:
The number 517 fits into 2940 5 times, leaving a remainder of 355.
The number 5 becomes the next digit in our result. 
Result so far: 123021.12185
Subtracting 2585 from 2940 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Going ahead to step 14:
517 goes into 3550 6 times with a remainder of 448.
The next digit of our result is 6. 
Result so far: 123021.121856
If we take 3102 away from 3550, we end up with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Advancing to step 15:
When dividing 4480 by 517, we get 8 with a remainder of 344.
Record the quotient 8 as the next digit in the result. 
Result so far: 123021.1218568
The remainder is 344 after subtracting 4136 from 4480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 16:
If we divide 3440 by 517, we get 6 and a remainder of 338.
The next digit of our result is 6. 
Result so far: 123021.12185686
Deduct 3102 from 3440 and we're left with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

The final result is 123021.12185686 with a remainder of 3.38e-07.