We're dividing 63975790 by 518 
The aim is to understand the frequency of 518 in 63975790.

Let's proceed to step 1:
When dividing 6 by 518, 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.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 518

Going ahead to step 2:
The number 518 fits into 63 0 times, leaving a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 518

Let's proceed to step 3:
518 goes into 639 1 times with a remainder of 121.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 518 away from 639, we end up with 121.
Take the next digit (7) from the dividend and append it to 121, then repeat: 1217 / 518

Moving on to step 4:
The number 518 fits into 1217 2 times, leaving a remainder of 181.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 1036 away from 1217, we end up with 181.
Bring next digit (5) of the dividend behind the 181 and repeat the process: 1815 / 518

Going ahead to step 5:
518 goes into 1815 3 times with a remainder of 261.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
If we take 1554 away from 1815, we end up with 261.
Take the next digit (7) from the dividend and append it to 261, then repeat: 2617 / 518

Going ahead to step 6:
2617 divided by 518 is 5 with a remainder of 27.
Use 5 as the next digit of our solution. 
Result so far: 1235.0
Subtract 2590 from 2617 to get 27.
Fetch the next digit (9) from the dividend, attach it to 27 and continue: 279 / 518

Step 7:
518 can be fit into 279 0 times, resulting in a remainder of 279.
The number 0 becomes the next digit in our result. 
Result so far: 12350.0
Subtract 0 from 279 to get 279.
Take the next digit (0) from the dividend and append it to 279, then repeat: 2790 / 518

Going ahead to step 8:
2790 divided by 518 is 5 with a remainder of 200.
Record the quotient 5 as the next digit in the result. 
Result so far: 123505.0
If we take 2590 away from 2790, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 9:
2000 divided by 518 is 3 with a remainder of 446.
Use 3 as the next digit of our solution. 
Result so far: 123505.3
If we subtract 1554 from 2000, we get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 10:
The number 518 fits into 4460 8 times, leaving a remainder of 316.
The number 8 becomes the next digit in our result. 
Result so far: 123505.38
Subtract 4144 from 4460 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Let's proceed to step 11:
3160 divided by 518 is 6 with a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 123505.386
Subtracting 3108 from 3160 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
The number 518 fits into 520 1 times, leaving a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 123505.3861
Subtracting 518 from 520 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 13:
518 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 123505.3861
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 14:
518 goes into 200 0 times with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 123505.3861
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 123505.3861 and a remainder of 2e-05.