We look at the division of 987665 by 15 
We want to figure out the number of times 987665 can be divided by 15.

On to step 1:
9 divided by 15 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 15

Advancing to step 2:
If we divide 98 by 15, we get 6 and a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 90 from 98, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 15

Going ahead to step 3:
When dividing 87 by 15, we get 5 with a remainder of 12.
The next digit of our result is 5. 
Result so far: 65.0
Subtract 75 from 87 to get 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 15

Going ahead to step 4:
126 divided by 15 is 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 658.0
If we subtract 120 from 126, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 15

Advancing to step 5:
If we divide 66 by 15, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 6584.0
If we subtract 60 from 66, we get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 15

Step 6:
15 goes into 65 4 times with a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 65844.0
If we subtract 60 from 65, 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 7:
50 divided by 15 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 65844.3
Deduct 45 from 50 and we're left 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.

Advancing to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 65844.33
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.

After the division, we end up with 65844.33 and a remainder of 0.005.