866423 divided by 16 
Our goal is to divide 866423 by 16.

Step 1:
The number 16 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 16

Let's proceed to step 2:
16 can be fit into 86 5 times, resulting in a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 6 after subtracting 80 from 86.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 16

On to step 3:
When dividing 66 by 16, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
Subtract 64 from 66 to get 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 16

Step 4:
16 goes into 24 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 541.0
Subtracting 16 from 24 leaves us with 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 16

Moving on to step 5:
If we divide 82 by 16, we get 5 and a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 5415.0
Subtract 80 from 82 to get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 16

Advancing to step 6:
When dividing 23 by 16, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 54151.0
If we take 16 away from 23, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 16, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 54151.4
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 8:
If we divide 60 by 16, we get 3 and a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 54151.43
Subtract 48 from 60 to 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.

Let's proceed to step 9:
If we divide 120 by 16, we get 7 and a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 54151.437
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.

Advancing to step 10:
80 divided by 16 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 54151.4375
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.

Step 11:
16 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: 54151.4375
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.

Step 12:
0 divided by 16 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 54151.4375
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.

Our division results in 54151.4375 with a remaining 0.0.