491946 ÷ 31 
We want to divide 491946 by 31.

Let's proceed to step 1:
31 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 31

Moving on to step 2:
The number 31 fits into 49 1 times, leaving a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 31 from 49 leaves us with 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 31

Let's proceed to step 3:
When dividing 181 by 31, we get 5 with a remainder of 26.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 155 from 181 to get 26.
Include the next digit (9) from the dividend after 26, then repeat: 269 / 31

On to step 4:
31 goes into 269 8 times with a remainder of 21.
The number 8 becomes the next digit in our result. 
Result so far: 158.0
Deduct 248 from 269 and we're left with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 31

Let's proceed to step 5:
When dividing 214 by 31, we get 6 with a remainder of 28.
The next digit of our result is 6. 
Result so far: 1586.0
Subtract 186 from 214 to get 28.
Bring next digit (6) of the dividend behind the 28 and repeat the process: 286 / 31

Let's proceed to step 6:
If we divide 286 by 31, we get 9 and a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 15869.0
Subtracting 279 from 286 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.

Step 7:
When dividing 70 by 31, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 15869.2
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.

Going ahead to step 8:
31 can be fit into 80 2 times, resulting in a remainder of 18.
The next digit of our result is 2. 
Result so far: 15869.22
Subtracting 62 from 80 leaves us with 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 15869.22 and a remainder of 0.018.