We're dividing 621791 by 16 
Let's see how many times 16 fits into 621791.

Moving on to step 1:
When dividing 6 by 16, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 16

Going ahead to step 2:
16 goes into 62 3 times with a remainder of 14.
The next digit of our result is 3. 
Result so far: 3.0
If we take 48 away from 62, we end up with 14.
Fetch the next digit (1) from the dividend, attach it to 14 and continue: 141 / 16

On to step 3:
16 goes into 141 8 times with a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Deduct 128 from 141 and we're left with 13.
Fetch the next digit (7) from the dividend, attach it to 13 and continue: 137 / 16

Step 4:
If we divide 137 by 16, we get 8 and a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 388.0
Subtracting 128 from 137 leaves us with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 16

Moving on to step 5:
If we divide 99 by 16, we get 6 and a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 3886.0
If we subtract 96 from 99, we get 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 16

On to step 6:
16 can be fit into 31 1 times, resulting in a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 38861.0
Subtract 16 from 31 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
16 goes into 150 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 38861.9
If we take 144 away from 150, we end up 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:
The number 16 fits into 60 3 times, leaving a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 38861.93
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.

Let's proceed to step 9:
The number 16 fits into 120 7 times, leaving a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 38861.937
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 10:
The number 16 fits into 80 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 38861.9375
Subtracting 80 from 80 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.

Going ahead to step 11:
0 divided by 16 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38861.9375
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.

On to step 12:
0 divided by 16 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38861.9375
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 outcome is 38861.9375, with a leftover of 0.0.