391187 divided by 15 
Our goal is to divide 391187 by 15.

Advancing to step 1:
The number 15 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 15

On to step 2:
The number 15 fits into 39 2 times, leaving a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 9 after subtracting 30 from 39.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 15

Going ahead to step 3:
91 divided by 15 is 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we take 90 away from 91, we end up with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 15

Advancing to step 4:
15 goes into 11 0 times with a remainder of 11.
The next digit of our result is 0. 
Result so far: 260.0
If we take 0 away from 11, we end up with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 15

Step 5:
15 can be fit into 118 7 times, resulting in a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 2607.0
Subtract 105 from 118 to get 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 15

On to step 6:
15 can be fit into 137 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 26079.0
If we subtract 135 from 137, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
The number 15 fits into 20 1 times, leaving a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 26079.1
If we subtract 15 from 20, we 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.

On to step 8:
50 divided by 15 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 26079.13
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.

Let's proceed to step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 26079.133
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.

The quotient of the division is 26079.133, and the remainder is 0.0005.