We're dividing 843021 by 16 
We're looking to find how many times 16 goes into 843021.

Advancing to step 1:
16 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 16

Going ahead to step 2:
If we divide 84 by 16, we get 5 and a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 4 after subtracting 80 from 84.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 16

Advancing to step 3:
43 divided by 16 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 52.0
Subtracting 32 from 43 leaves us with 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 16

Advancing to step 4:
The number 16 fits into 110 6 times, leaving a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 526.0
If we subtract 96 from 110, we get 14.
Take the next digit (2) from the dividend and append it to 14, then repeat: 142 / 16

On to step 5:
142 divided by 16 is 8 with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 5268.0
If we subtract 128 from 142, we get 14.
Append the next digit (1) from the dividend to 14 and continue with: 141 / 16

Step 6:
If we divide 141 by 16, we get 8 and a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 52688.0
If we subtract 128 from 141, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
16 goes into 130 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 52688.8
The remainder is 2 after subtracting 128 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
16 goes into 20 1 times with a remainder of 4.
The next digit of our result is 1. 
Result so far: 52688.81
The remainder is 4 after subtracting 16 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
16 goes into 40 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 52688.812
If we take 32 away from 40, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
The number 16 fits into 80 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 52688.8125
If we take 80 away from 80, we end up 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.

Going ahead to step 11:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 52688.8125
If we take 0 away from 0, we end up 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 12:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 52688.8125
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.

The quotient of the division is 52688.8125, and the remainder is 0.0.