450993 ÷ 3 
We're looking to find how many times 3 goes into 450993.

On to step 1:
When dividing 4 by 3, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 3 from 4 leaves us with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 3

Moving on to step 2:
3 can be fit into 15 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 15 from 15 to get 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 3

Moving on to step 3:
0 divided by 3 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 150.0
Subtracting 0 from 0 leaves us with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 3

Advancing to step 4:
When dividing 9 by 3, we get 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 1503.0
The remainder is 0 after subtracting 9 from 9.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 3

Moving on to step 5:
3 goes into 9 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 15033.0
If we take 9 away from 9, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 3

Step 6:
If we divide 3 by 3, we get 1 and a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 150331.0
Subtract 3 from 3 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.

Moving on to step 7:
If we divide 0 by 3, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 150331.0
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 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 150331.0
If we take 0 away from 0, 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.

In conclusion, the division gives 150331.0 with a balance of 0.0.