We look at the division of 621342 by 16 
We want to figure out the number of times 621342 can be divided by 16.

On to step 1:
When dividing 6 by 16, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 16

Going ahead to step 2:
16 can be fit into 62 3 times, resulting in a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 48 away from 62, we end up with 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 16

On to step 3:
141 divided by 16 is 8 with a remainder of 13.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtract 128 from 141 to get 13.
Grab the next digit (3) from the dividend, add it to 13, then carry on: 133 / 16

Moving on to step 4:
16 goes into 133 8 times with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 388.0
If we take 128 away from 133, we end up with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 16

Going ahead to step 5:
The number 16 fits into 54 3 times, leaving a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 3883.0
Subtracting 48 from 54 leaves us with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 16

Going ahead to step 6:
When dividing 62 by 16, we get 3 with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 38833.0
The remainder is 14 after subtracting 48 from 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
If we divide 140 by 16, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 38833.8
Subtracting 128 from 140 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
When dividing 120 by 16, we get 7 with a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 38833.87
Subtracting 112 from 120 leaves us 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.

Moving on to step 9:
16 can be fit into 80 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 38833.875
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.

Advancing to step 10:
When dividing 0 by 16, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 38833.875
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.

Advancing to step 11:
16 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 38833.875
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 final result is 38833.875 with a remainder of 0.0.