20393450 ÷ 631 
Let's see how many times 631 fits into 20393450.

Moving on to step 1:
When dividing 2 by 631, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 631

On to step 2:
When dividing 20 by 631, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Include the next digit (3) from the dividend after 20, then repeat: 203 / 631

Advancing to step 3:
631 can be fit into 203 0 times, resulting in a remainder of 203.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 203 to get 203.
Grab the next digit (9) from the dividend, add it to 203, then carry on: 2039 / 631

Let's proceed to step 4:
If we divide 2039 by 631, we get 3 and a remainder of 146.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1893 away from 2039, we end up with 146.
Include the next digit (3) from the dividend after 146, then repeat: 1463 / 631

Advancing to step 5:
631 can be fit into 1463 2 times, resulting in a remainder of 201.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Subtract 1262 from 1463 to get 201.
Append the next digit (4) from the dividend to 201 and continue with: 2014 / 631

Moving on to step 6:
The number 631 fits into 2014 3 times, leaving a remainder of 121.
Put 3 as the next digit of the answer. 
Result so far: 323.0
Subtracting 1893 from 2014 leaves us with 121.
Bring next digit (5) of the dividend behind the 121 and repeat the process: 1215 / 631

Going ahead to step 7:
1215 divided by 631 is 1 with a remainder of 584.
Write down 1 as next digit of the result. 
Result so far: 3231.0
If we take 631 away from 1215, we end up with 584.
Include the next digit (0) from the dividend after 584, then repeat: 5840 / 631

Step 8:
When dividing 5840 by 631, we get 9 with a remainder of 161.
Record the quotient 9 as the next digit in the result. 
Result so far: 32319.0
If we subtract 5679 from 5840, we get 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Advancing to step 9:
1610 divided by 631 is 2 with a remainder of 348.
Put 2 as the next digit of the answer. 
Result so far: 32319.2
The remainder is 348 after subtracting 1262 from 1610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Moving on to step 10:
631 can be fit into 3480 5 times, resulting in a remainder of 325.
Record the quotient 5 as the next digit in the result. 
Result so far: 32319.25
If we take 3155 away from 3480, we end up with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Going ahead to step 11:
631 goes into 3250 5 times with a remainder of 95.
Put 5 as the next digit of the answer. 
Result so far: 32319.255
Subtract 3155 from 3250 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

The final result is 32319.255 with a remainder of 0.0095.