868634 ÷ 15 
We're looking to find how many times 15 goes into 868634.

Moving on to step 1:
15 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 15

Going ahead to step 2:
15 goes into 86 5 times with a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 75 from 86 to get 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 15

Moving on to step 3:
15 goes into 118 7 times with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 57.0
Subtract 105 from 118 to get 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 15

Going ahead to step 4:
136 divided by 15 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 579.0
The remainder is 1 after subtracting 135 from 136.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 15

Let's proceed to step 5:
13 divided by 15 is 0 with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 5790.0
If we take 0 away from 13, we end up with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 15

Advancing to step 6:
If we divide 134 by 15, we get 8 and a remainder of 14.
The next digit of our result is 8. 
Result so far: 57908.0
Subtract 120 from 134 to get 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:
15 goes into 140 9 times with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 57908.9
If we subtract 135 from 140, 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:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 57908.93
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:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 57908.933
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.

The final result is 57908.933 with a remainder of 0.0005.