We look at the division of 648722 by 38 
The aim is to understand the frequency of 38 in 648722.

Going ahead to step 1:
6 divided by 38 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 38

Moving on to step 2:
The number 38 fits into 64 1 times, leaving a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 26 after subtracting 38 from 64.
Append the next digit (8) from the dividend to 26 and continue with: 268 / 38

Going ahead to step 3:
38 goes into 268 7 times with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 266 from 268, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 38

Moving on to step 4:
27 divided by 38 is 0 with a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 170.0
Deduct 0 from 27 and we're left with 27.
Bring next digit (2) of the dividend behind the 27 and repeat the process: 272 / 38

On to step 5:
The number 38 fits into 272 7 times, leaving a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 1707.0
If we subtract 266 from 272, we get 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 38

On to step 6:
62 divided by 38 is 1 with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 17071.0
Deduct 38 from 62 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 7:
38 can be fit into 240 6 times, resulting in a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 17071.6
Deduct 228 from 240 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
The number 38 fits into 120 3 times, leaving a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 17071.63
Subtract 114 from 120 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
60 divided by 38 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 17071.631
Subtract 38 from 60 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 10:
38 goes into 220 5 times with a remainder of 30.
The next digit of our result is 5. 
Result so far: 17071.6315
The remainder is 30 after subtracting 190 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
The number 38 fits into 300 7 times, leaving a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 17071.63157
Subtracting 266 from 300 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 12:
If we divide 340 by 38, we get 8 and a remainder of 36.
The next digit of our result is 8. 
Result so far: 17071.631578
If we subtract 304 from 340, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 13:
38 goes into 360 9 times with a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 17071.6315789
Subtract 342 from 360 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 14:
38 can be fit into 180 4 times, resulting in a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 17071.63157894
Subtract 152 from 180 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 17071.63157894, with a leftover of 2.8e-08.