We're dividing 876123 by 15 
We want to divide 876123 by 15.

Step 1:
If we divide 8 by 15, we get 0 and 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.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 15

Step 2:
When dividing 87 by 15, we get 5 with a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 75 from 87 to get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 15

On to step 3:
15 can be fit into 126 8 times, resulting in a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
If we subtract 120 from 126, we get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 15

On to step 4:
If we divide 61 by 15, we get 4 and a remainder of 1.
The next digit of our result is 4. 
Result so far: 584.0
Subtract 60 from 61 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 15

On to step 5:
The number 15 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 5840.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 15

Step 6:
15 can be fit into 123 8 times, resulting in a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 58408.0
The remainder is 3 after subtracting 120 from 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
15 goes into 30 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 58408.2
Deduct 30 from 30 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
15 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 58408.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
15 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 58408.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 58408.2 with a remaining 0.0.