1287 divided by 38 
The aim is to understand the frequency of 38 in 1287.

Going ahead to step 1:
38 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 38

Going ahead to step 2:
The number 38 fits into 12 0 times, leaving a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 38

Step 3:
128 divided by 38 is 3 with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 114 from 128 and we're left with 14.
Grab the next digit (7) from the dividend, add it to 14, then carry on: 147 / 38

Going ahead to step 4:
147 divided by 38 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 33.0
Subtract 114 from 147 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 5:
38 goes into 330 8 times with a remainder of 26.
The next digit of our result is 8. 
Result so far: 33.8
Deduct 304 from 330 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 6:
The number 38 fits into 260 6 times, leaving a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 33.86
Subtracting 228 from 260 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 7:
The number 38 fits into 320 8 times, leaving a remainder of 16.
The next digit of our result is 8. 
Result so far: 33.868
Subtract 304 from 320 to 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.

Going ahead to step 8:
38 can be fit into 160 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 33.8684
If we take 152 away from 160, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
38 can be fit into 80 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 33.86842
The remainder is 4 after subtracting 76 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
The number 38 fits into 40 1 times, leaving a remainder of 2.
The next digit of our result is 1. 
Result so far: 33.868421
Subtracting 38 from 40 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.

Going ahead to step 11:
20 divided by 38 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 33.868421
Deduct 0 from 20 and we're left with 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 12:
200 divided by 38 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 33.86842105
If we subtract 190 from 200, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 33.86842105, with a leftover of 1e-08.