Let's divide 166915 by 15
We're looking to find how many times 15 goes into 166915.

Step 1:
15 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 15

Step 2:
15 can be fit into 16 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 1 after subtracting 15 from 16.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 15

Let's proceed to step 3:
15 can be fit into 16 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 15 from 16 and we're left with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 15

Advancing to step 4:
If we divide 19 by 15, we get 1 and a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 111.0
The remainder is 4 after subtracting 15 from 19.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 15

Going ahead to step 5:
If we divide 41 by 15, we get 2 and a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 1112.0
Subtracting 30 from 41 leaves us with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 15

Moving on to step 6:
If we divide 115 by 15, we get 7 and a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 11127.0
The remainder is 10 after subtracting 105 from 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 11127.6
Subtract 90 from 100 to 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.

Moving on to step 8:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 11127.66
If we subtract 90 from 100, 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 11127.66, with a leftover of 0.01.