878609 ÷ 15 
Let's see how many times 15 fits into 878609.

Advancing to step 1:
8 divided by 15 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 15

Advancing to step 2:
The number 15 fits into 87 5 times, leaving a remainder of 12.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 75 from 87 and we're left with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 15

Step 3:
15 goes into 128 8 times with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 58.0
Subtract 120 from 128 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 15

Let's proceed to step 4:
When dividing 86 by 15, we get 5 with a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 585.0
If we subtract 75 from 86, we get 11.
Grab the next digit (0) from the dividend, add it to 11, then carry on: 110 / 15

On to step 5:
The number 15 fits into 110 7 times, leaving a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 5857.0
The remainder is 5 after subtracting 105 from 110.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 15

Moving on to step 6:
15 can be fit into 59 3 times, resulting in a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 58573.0
If we take 45 away from 59, we end up 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.

Step 7:
15 can be fit into 140 9 times, resulting in a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 58573.9
Subtract 135 from 140 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.

Going ahead to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 58573.93
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.

Step 9:
When dividing 50 by 15, we get 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 58573.933
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 quotient of the division is 58573.933, and the remainder is 0.0005.