939338 divided by 15 
The aim is to understand the frequency of 15 in 939338.

Let's proceed to step 1:
The number 15 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 15

Moving on to step 2:
If we divide 93 by 15, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 90 from 93 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 15

Advancing to step 3:
When dividing 39 by 15, we get 2 with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 62.0
Deduct 30 from 39 and we're left with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 15

On to step 4:
93 divided by 15 is 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 626.0
Subtract 90 from 93 to get 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 15

Step 5:
The number 15 fits into 33 2 times, leaving a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 6262.0
Subtract 30 from 33 to get 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 15

Moving on to step 6:
When dividing 38 by 15, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 62622.0
If we subtract 30 from 38, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
15 can be fit into 80 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 62622.5
If we take 75 away from 80, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 62622.53
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 62622.533
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 62622.533 and a remainder of 0.0005.