863780 ÷ 15 
We want to divide 863780 by 15.

Advancing to step 1:
8 divided by 15 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 15

On to step 2:
86 divided by 15 is 5 with a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 11 after subtracting 75 from 86.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 15

Let's proceed to step 3:
15 goes into 113 7 times with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 57.0
The remainder is 8 after subtracting 105 from 113.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 15

On to step 4:
If we divide 87 by 15, we get 5 and a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 575.0
If we subtract 75 from 87, we get 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 15

Going ahead to step 5:
The number 15 fits into 128 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 5758.0
Subtract 120 from 128 to get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 15

Let's proceed to step 6:
80 divided by 15 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 57585.0
Deduct 75 from 80 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.

Advancing to step 7:
When dividing 50 by 15, we get 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 57585.3
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.

Step 8:
15 goes into 50 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 57585.33
Subtract 45 from 50 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.

The final outcome is 57585.33, with a leftover of 0.005.