879400 ÷ 15 
We're looking to find how many times 15 goes into 879400.

Moving on to step 1:
15 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 15

On to step 2:
When dividing 87 by 15, we get 5 with a remainder of 12.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 75 from 87 to get 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 15

Advancing to step 3:
15 goes into 129 8 times with a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 58.0
The remainder is 9 after subtracting 120 from 129.
Take the next digit (4) from the dividend and append it to 9, then repeat: 94 / 15

On to step 4:
When dividing 94 by 15, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 586.0
Subtract 90 from 94 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 15

Moving on to step 5:
When dividing 40 by 15, we get 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 5862.0
The remainder is 10 after subtracting 30 from 40.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 15

Step 6:
If we divide 100 by 15, we get 6 and a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 58626.0
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 58626.6
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
100 divided by 15 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 58626.66
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 58626.66 with a remainder of 0.01.