We look at the division of 40024338 by 397 
The aim is to understand the frequency of 397 in 40024338.

Moving on to step 1:
When dividing 4 by 397, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 397

Moving on to step 2:
If we divide 40 by 397, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 397

Advancing to step 3:
If we divide 400 by 397, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 397 from 400 and we're left with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 397

Step 4:
397 can be fit into 32 0 times, resulting in a remainder of 32.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 32 and we're left with 32.
Append the next digit (4) from the dividend to 32 and continue with: 324 / 397

Let's proceed to step 5:
324 divided by 397 is 0 with a remainder of 324.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
Subtract 0 from 324 to get 324.
Append the next digit (3) from the dividend to 324 and continue with: 3243 / 397

Going ahead to step 6:
If we divide 3243 by 397, we get 8 and a remainder of 67.
Put 8 as the next digit of the answer. 
Result so far: 1008.0
Subtracting 3176 from 3243 leaves us with 67.
Include the next digit (3) from the dividend after 67, then repeat: 673 / 397

Moving on to step 7:
If we divide 673 by 397, we get 1 and a remainder of 276.
Write down 1 as next digit of the result. 
Result so far: 10081.0
If we subtract 397 from 673, we get 276.
Fetch the next digit (8) from the dividend, attach it to 276 and continue: 2768 / 397

On to step 8:
397 goes into 2768 6 times with a remainder of 386.
The number 6 becomes the next digit in our result. 
Result so far: 100816.0
The remainder is 386 after subtracting 2382 from 2768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 9:
3860 divided by 397 is 9 with a remainder of 287.
The next digit of our result is 9. 
Result so far: 100816.9
Subtract 3573 from 3860 to get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Advancing to step 10:
The number 397 fits into 2870 7 times, leaving a remainder of 91.
Use 7 as the next digit of our solution. 
Result so far: 100816.97
If we subtract 2779 from 2870, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 11:
When dividing 910 by 397, we get 2 with a remainder of 116.
Write down 2 as next digit of the result. 
Result so far: 100816.972
Deduct 794 from 910 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 12:
1160 divided by 397 is 2 with a remainder of 366.
Put 2 as the next digit of the answer. 
Result so far: 100816.9722
If we subtract 794 from 1160, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

The final result is 100816.9722 with a remainder of 0.00366.