20313323 divided by 646 
We want to figure out the number of times 20313323 can be divided by 646.

Moving on to step 1:
646 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 646

Let's proceed to step 2:
20 divided by 646 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Bring next digit (3) of the dividend behind the 20 and repeat the process: 203 / 646

Going ahead to step 3:
If we divide 203 by 646, we get 0 and a remainder of 203.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 203 after subtracting 0 from 203.
Append the next digit (1) from the dividend to 203 and continue with: 2031 / 646

Advancing to step 4:
The number 646 fits into 2031 3 times, leaving a remainder of 93.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 93 after subtracting 1938 from 2031.
Append the next digit (3) from the dividend to 93 and continue with: 933 / 646

Step 5:
646 goes into 933 1 times with a remainder of 287.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we subtract 646 from 933, we get 287.
Take the next digit (3) from the dividend and append it to 287, then repeat: 2873 / 646

Going ahead to step 6:
If we divide 2873 by 646, we get 4 and a remainder of 289.
Write down 4 as next digit of the result. 
Result so far: 314.0
Subtracting 2584 from 2873 leaves us with 289.
Include the next digit (2) from the dividend after 289, then repeat: 2892 / 646

Let's proceed to step 7:
646 goes into 2892 4 times with a remainder of 308.
The number 4 becomes the next digit in our result. 
Result so far: 3144.0
The remainder is 308 after subtracting 2584 from 2892.
Append the next digit (3) from the dividend to 308 and continue with: 3083 / 646

Step 8:
646 can be fit into 3083 4 times, resulting in a remainder of 499.
The number 4 becomes the next digit in our result. 
Result so far: 31444.0
Deduct 2584 from 3083 and we're left with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Step 9:
4990 divided by 646 is 7 with a remainder of 468.
Record the quotient 7 as the next digit in the result. 
Result so far: 31444.7
Subtracting 4522 from 4990 leaves us with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Moving on to step 10:
If we divide 4680 by 646, we get 7 and a remainder of 158.
Put 7 as the next digit of the answer. 
Result so far: 31444.77
If we subtract 4522 from 4680, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

The quotient of the division is 31444.77, and the remainder is 0.158.