939392 divided by 15 
The aim is to understand the frequency of 15 in 939392.

Going ahead to step 1:
The number 15 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 15

Let's proceed to step 2:
15 goes into 93 6 times with a remainder of 3.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 90 from 93 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 15

Moving on to step 3:
When dividing 39 by 15, we get 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 62.0
If we take 30 away from 39, we end up with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 15

Step 4:
93 divided by 15 is 6 with a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 626.0
Deduct 90 from 93 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 15

Moving on to step 5:
15 can be fit into 39 2 times, resulting in a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 6262.0
The remainder is 9 after subtracting 30 from 39.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 15

Step 6:
92 divided by 15 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 62626.0
If we take 90 away from 92, we end up 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.

Advancing to step 7:
20 divided by 15 is 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 62626.1
The remainder is 5 after subtracting 15 from 20.
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:
If we divide 50 by 15, we get 3 and a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 62626.13
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
15 goes into 50 3 times with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 62626.133
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.

The quotient of the division is 62626.133, and the remainder is 0.0005.