We divide 171624 by 15
The aim is to understand the frequency of 15 in 171624.

Going ahead to step 1:
If we divide 1 by 15, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 15

On to step 2:
When dividing 17 by 15, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 15 from 17 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 15

Going ahead to step 3:
The number 15 fits into 21 1 times, leaving a remainder of 6.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 15 from 21 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 15

Step 4:
15 goes into 66 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 114.0
If we take 60 away from 66, we end up with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 15

Going ahead to step 5:
The number 15 fits into 62 4 times, leaving a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 1144.0
If we take 60 away from 62, we end up with 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 15

On to step 6:
The number 15 fits into 24 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 11441.0
If we subtract 15 from 24, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
If we divide 90 by 15, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 11441.6
Subtract 90 from 90 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 15, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 11441.6
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
0 divided by 15 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 11441.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 11441.6, with a leftover of 0.0.