We're dividing 521649 by 16 
Let's see how many times 16 fits into 521649.

Step 1:
When dividing 5 by 16, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 16

Going ahead to step 2:
When dividing 52 by 16, we get 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 4 after subtracting 48 from 52.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 16

On to step 3:
41 divided by 16 is 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
If we subtract 32 from 41, we get 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 16

On to step 4:
16 can be fit into 96 6 times, resulting in a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 326.0
Deduct 96 from 96 and we're left with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 16

Step 5:
16 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 3260.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 16

Moving on to step 6:
The number 16 fits into 49 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 32603.0
If we take 48 away from 49, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 16 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 32603.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
When dividing 100 by 16, we get 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 32603.06
Subtracting 96 from 100 leaves us with 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:
40 divided by 16 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 32603.062
Subtracting 32 from 40 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.

On to step 10:
80 divided by 16 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 32603.0625
If we subtract 80 from 80, 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 11:
If we divide 0 by 16, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 32603.0625
Subtract 0 from 0 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.

Going ahead to step 12:
When dividing 0 by 16, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 32603.0625
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.

The final outcome is 32603.0625, with a leftover of 0.0.