We divide 115993 by 15
We're looking to find how many times 15 goes into 115993.

Step 1:
15 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 15

On to step 2:
11 divided by 15 is 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 15

Moving on to step 3:
115 divided by 15 is 7 with a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 10 after subtracting 105 from 115.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 15

Let's proceed to step 4:
15 goes into 109 7 times with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
The remainder is 4 after subtracting 105 from 109.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 15

Moving on to step 5:
If we divide 49 by 15, we get 3 and a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 773.0
Subtract 45 from 49 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 15

Advancing to step 6:
15 goes into 43 2 times with a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 7732.0
Deduct 30 from 43 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
The number 15 fits into 130 8 times, leaving a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 7732.8
If we subtract 120 from 130, 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.

Advancing to step 8:
If we divide 100 by 15, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 7732.86
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 7732.866
If we take 90 away from 100, we end up with 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 result is 7732.866 with a remainder of 0.001.