663450 divided by 31 
We're looking to find how many times 31 goes into 663450.

Advancing to step 1:
When dividing 6 by 31, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 31

On to step 2:
66 divided by 31 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 62 from 66 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 31

Let's proceed to step 3:
31 goes into 43 1 times with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 31 away from 43, we end up with 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 31

Let's proceed to step 4:
The number 31 fits into 124 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 214.0
If we subtract 124 from 124, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 31

Let's proceed to step 5:
When dividing 5 by 31, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 2140.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 31

Let's proceed to step 6:
31 goes into 50 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 21401.0
The remainder is 19 after subtracting 31 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
190 divided by 31 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 21401.6
If we subtract 186 from 190, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
31 can be fit into 40 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 21401.61
If we subtract 31 from 40, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
31 can be fit into 90 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 21401.612
Subtracting 62 from 90 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 10:
31 can be fit into 280 9 times, resulting in a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 21401.6129
Subtracting 279 from 280 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 11:
31 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 21401.6129
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
If we divide 100 by 31, we get 3 and a remainder of 7.
The next digit of our result is 3. 
Result so far: 21401.612903
Subtracting 93 from 100 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 13:
31 goes into 70 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 21401.6129032
If we subtract 62 from 70, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 14:
31 can be fit into 80 2 times, resulting in a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 21401.61290322
Subtract 62 from 80 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 21401.61290322 and a remainder of 1.8e-08.