687809 ÷ 15 
Our goal is to divide 687809 by 15.

Step 1:
6 divided by 15 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 15

Advancing to step 2:
The number 15 fits into 68 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 60 from 68, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 15

Let's proceed to step 3:
15 can be fit into 87 5 times, resulting in a remainder of 12.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
The remainder is 12 after subtracting 75 from 87.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 15

Advancing to step 4:
The number 15 fits into 128 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 458.0
If we take 120 away from 128, we end up with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 15

Step 5:
15 can be fit into 80 5 times, resulting in a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 4585.0
If we take 75 away from 80, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 15

Let's proceed to step 6:
The number 15 fits into 59 3 times, leaving a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 45853.0
Subtracting 45 from 59 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
If we divide 140 by 15, we get 9 and a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 45853.9
If we take 135 away from 140, 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.

Moving on to step 8:
50 divided by 15 is 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 45853.93
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.

Advancing to step 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The next digit of our result is 3. 
Result so far: 45853.933
If we subtract 45 from 50, 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.

The final result is 45853.933 with a remainder of 0.0005.