563959 divided by 3 
We want to divide 563959 by 3.

On to step 1:
When dividing 5 by 3, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 3

Advancing to step 2:
3 goes into 26 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we take 24 away from 26, we end up with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 3

Step 3:
23 divided by 3 is 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 187.0
Subtract 21 from 23 to get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 3

Let's proceed to step 4:
3 goes into 29 9 times with a remainder of 2.
The next digit of our result is 9. 
Result so far: 1879.0
If we subtract 27 from 29, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 3

On to step 5:
3 goes into 25 8 times with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 18798.0
If we take 24 away from 25, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 3

Step 6:
3 can be fit into 19 6 times, resulting in a remainder of 1.
The next digit of our result is 6. 
Result so far: 187986.0
If we subtract 18 from 19, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
3 can be fit into 10 3 times, resulting in a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 187986.3
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 187986.33
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 187986.33 with a remainder of 0.001.