558621 divided by 16 
Our goal is to divide 558621 by 16.

Let's proceed to step 1:
5 divided by 16 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 16

On to step 2:
If we divide 55 by 16, we get 3 and a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 48 from 55 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 16

Step 3:
16 can be fit into 78 4 times, resulting in a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Deduct 64 from 78 and we're left with 14.
Grab the next digit (6) from the dividend, add it to 14, then carry on: 146 / 16

Advancing to step 4:
The number 16 fits into 146 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 349.0
Subtract 144 from 146 to get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 16

Going ahead to step 5:
If we divide 22 by 16, we get 1 and a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 3491.0
If we subtract 16 from 22, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 16

Moving on to step 6:
16 can be fit into 61 3 times, resulting in a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 34913.0
If we take 48 away from 61, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
16 can be fit into 130 8 times, resulting in a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 34913.8
Subtracting 128 from 130 leaves us with 2.
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:
If we divide 20 by 16, we get 1 and a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 34913.81
Subtract 16 from 20 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
16 can be fit into 40 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 34913.812
The remainder is 8 after subtracting 32 from 40.
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:
80 divided by 16 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 34913.8125
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.

Step 11:
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: 34913.8125
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.

On to step 12:
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: 34913.8125
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.

The final outcome is 34913.8125, with a leftover of 0.0.