937871 divided by 15 
The aim is to understand the frequency of 15 in 937871.

Advancing 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
Deduct 0 from 9 and we're left with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 15

Going ahead to step 2:
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: 6.0
If we subtract 90 from 93, we get 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 15

Moving on to step 3:
If we divide 37 by 15, we get 2 and a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
If we take 30 away from 37, we end up with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 15

Step 4:
When dividing 78 by 15, we get 5 with a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 625.0
If we subtract 75 from 78, we get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 15

On to step 5:
15 can be fit into 37 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 6252.0
If we take 30 away from 37, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 15

Step 6:
The number 15 fits into 71 4 times, leaving a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 62524.0
If we take 60 away from 71, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
If we divide 110 by 15, we get 7 and a remainder of 5.
The next digit of our result is 7. 
Result so far: 62524.7
Subtract 105 from 110 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.

Step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 62524.73
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.

On to step 9:
50 divided by 15 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 62524.733
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.

Our division results in 62524.733 with a remaining 0.0005.