21168 ÷ 40 
We want to divide 21168 by 40.

Advancing to step 1:
40 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 40

Advancing to step 2:
40 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 40

Step 3:
40 can be fit into 211 5 times, resulting in a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 200 away from 211, we end up with 11.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 40

Going ahead to step 4:
The number 40 fits into 116 2 times, leaving a remainder of 36.
The next digit of our result is 2. 
Result so far: 52.0
Subtracting 80 from 116 leaves us with 36.
Bring next digit (8) of the dividend behind the 36 and repeat the process: 368 / 40

Moving on to step 5:
If we divide 368 by 40, we get 9 and a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 529.0
The remainder is 8 after subtracting 360 from 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 6:
If we divide 80 by 40, we get 2 and a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 529.2
Deduct 80 from 80 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.

Let's proceed to step 7:
0 divided by 40 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 529.2
Subtract 0 from 0 to 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.

On to step 8:
If we divide 0 by 40, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 529.2
If we take 0 away from 0, we end up 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.

After the division, we end up with 529.2 and a remainder of 0.0.