We're dividing 6379 by 18 
The aim is to understand the frequency of 18 in 6379.

Going ahead to step 1:
18 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 18

Going ahead to step 2:
When dividing 63 by 18, we get 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 9 after subtracting 54 from 63.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 18

On to step 3:
The number 18 fits into 97 5 times, leaving a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 35.0
The remainder is 7 after subtracting 90 from 97.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 18

Advancing to step 4:
18 goes into 79 4 times with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 354.0
Subtract 72 from 79 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 5:
If we divide 70 by 18, we get 3 and a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 354.3
Deduct 54 from 70 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 6:
18 goes into 160 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 354.38
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
160 divided by 18 is 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 354.388
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 354.388 with a remaining 0.0016.