We're dividing 863270 by 16 
Our goal is to divide 863270 by 16.

Advancing to step 1:
The number 16 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 16

Going ahead to step 2:
86 divided by 16 is 5 with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 80 from 86 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 16

On to step 3:
63 divided by 16 is 3 with a remainder of 15.
The next digit of our result is 3. 
Result so far: 53.0
The remainder is 15 after subtracting 48 from 63.
Append the next digit (2) from the dividend to 15 and continue with: 152 / 16

Moving on to step 4:
16 can be fit into 152 9 times, resulting in a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 539.0
Subtract 144 from 152 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 16

Going ahead to step 5:
16 goes into 87 5 times with a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 5395.0
If we subtract 80 from 87, we get 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 16

On to step 6:
16 goes into 70 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 53954.0
Subtracting 64 from 70 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
When dividing 60 by 16, we get 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 53954.3
If we subtract 48 from 60, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
If we divide 120 by 16, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 53954.37
Subtract 112 from 120 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
When dividing 80 by 16, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 53954.375
Subtract 80 from 80 to 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.

Going ahead to step 10:
0 divided by 16 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 53954.375
Deduct 0 from 0 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.

Step 11:
If we divide 0 by 16, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 53954.375
Subtracting 0 from 0 leaves us 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.

The final outcome is 53954.375, with a leftover of 0.0.