Let's divide 66130968 by 638
The aim is to understand the frequency of 638 in 66130968.

Moving on to step 1:
638 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 638

Moving on to step 2:
When dividing 66 by 638, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 638

On to step 3:
661 divided by 638 is 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 638 from 661, we get 23.
Grab the next digit (3) from the dividend, add it to 23, then carry on: 233 / 638

Step 4:
The number 638 fits into 233 0 times, leaving a remainder of 233.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 233 to get 233.
Grab the next digit (0) from the dividend, add it to 233, then carry on: 2330 / 638

Advancing to step 5:
The number 638 fits into 2330 3 times, leaving a remainder of 416.
Use 3 as the next digit of our solution. 
Result so far: 103.0
The remainder is 416 after subtracting 1914 from 2330.
Include the next digit (9) from the dividend after 416, then repeat: 4169 / 638

On to step 6:
If we divide 4169 by 638, we get 6 and a remainder of 341.
The number 6 becomes the next digit in our result. 
Result so far: 1036.0
Deduct 3828 from 4169 and we're left with 341.
Take the next digit (6) from the dividend and append it to 341, then repeat: 3416 / 638

Advancing to step 7:
If we divide 3416 by 638, we get 5 and a remainder of 226.
Record the quotient 5 as the next digit in the result. 
Result so far: 10365.0
The remainder is 226 after subtracting 3190 from 3416.
Include the next digit (8) from the dividend after 226, then repeat: 2268 / 638

Let's proceed to step 8:
When dividing 2268 by 638, we get 3 with a remainder of 354.
The number 3 becomes the next digit in our result. 
Result so far: 103653.0
Subtract 1914 from 2268 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Going ahead to step 9:
638 goes into 3540 5 times with a remainder of 350.
Record the quotient 5 as the next digit in the result. 
Result so far: 103653.5
If we take 3190 away from 3540, 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.

Moving on to step 10:
When dividing 3500 by 638, we get 5 with a remainder of 310.
Use 5 as the next digit of our solution. 
Result so far: 103653.55
Subtracting 3190 from 3500 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The quotient of the division is 103653.55, and the remainder is 0.31.