645813 divided by 33 
Let's see how many times 33 fits into 645813.

On to step 1:
The number 33 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 33

Advancing to step 2:
33 goes into 64 1 times with a remainder of 31.
The next digit of our result is 1. 
Result so far: 1.0
If we take 33 away from 64, we end up with 31.
Include the next digit (5) from the dividend after 31, then repeat: 315 / 33

Moving on to step 3:
315 divided by 33 is 9 with a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 297 from 315 to get 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 33

On to step 4:
When dividing 188 by 33, we get 5 with a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 195.0
If we subtract 165 from 188, we get 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 33

On to step 5:
33 goes into 231 7 times with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 1957.0
Subtracting 231 from 231 leaves us with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 33

Going ahead to step 6:
3 divided by 33 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 19570.0
Subtracting 0 from 3 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
33 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 19570.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
When dividing 300 by 33, we get 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 19570.09
Subtract 297 from 300 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
If we divide 30 by 33, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 19570.09
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
If we divide 300 by 33, we get 9 and a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 19570.0909
Deduct 297 from 300 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
33 goes into 30 0 times with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 19570.0909
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 12:
300 divided by 33 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 19570.090909
If we subtract 297 from 300, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
The number 33 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 19570.090909
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 14:
The number 33 fits into 300 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 19570.09090909
Deduct 297 from 300 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 19570.09090909, with a leftover of 3e-09.