668019 ÷ 31 
We're looking to find how many times 31 goes into 668019.

Step 1:
31 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 31

Let's proceed to step 2:
31 can be fit into 66 2 times, resulting in a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 62 from 66 and we're left with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 31

Let's proceed to step 3:
If we divide 48 by 31, we get 1 and a remainder of 17.
The next digit of our result is 1. 
Result so far: 21.0
If we subtract 31 from 48, we get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 31

On to step 4:
31 can be fit into 170 5 times, resulting in a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 215.0
If we take 155 away from 170, we end up with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 31

Moving on to step 5:
151 divided by 31 is 4 with a remainder of 27.
Use 4 as the next digit of our solution. 
Result so far: 2154.0
Subtract 124 from 151 to get 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 31

Step 6:
31 goes into 279 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 21549.0
If we subtract 279 from 279, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
0 divided by 31 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 21549.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
31 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 21549.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 21549.0, with a leftover of 0.0.