668384 divided by 40 
We want to divide 668384 by 40.

Going ahead to step 1:
40 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 40

On to step 2:
When dividing 66 by 40, we get 1 with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 26 after subtracting 40 from 66.
Include the next digit (8) from the dividend after 26, then repeat: 268 / 40

Moving on to step 3:
40 goes into 268 6 times with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 240 away from 268, we end up with 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 40

On to step 4:
When dividing 283 by 40, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 167.0
If we take 280 away from 283, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 40

Advancing to step 5:
40 can be fit into 38 0 times, resulting in a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 1670.0
Subtracting 0 from 38 leaves us with 38.
Bring next digit (4) of the dividend behind the 38 and repeat the process: 384 / 40

Advancing to step 6:
40 goes into 384 9 times with a remainder of 24.
The number 9 becomes the next digit in our result. 
Result so far: 16709.0
If we subtract 360 from 384, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 7:
If we divide 240 by 40, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 16709.6
Subtracting 240 from 240 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.

Advancing to step 8:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16709.6
If we subtract 0 from 0, 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.

Step 9:
40 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16709.6
Deduct 0 from 0 and we're left 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 16709.6, with a leftover of 0.0.