665453 divided by 40 
We want to figure out the number of times 665453 can be divided by 40.

Advancing to step 1:
6 divided by 40 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 40

Step 2:
40 can be fit into 66 1 times, resulting in a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 26 after subtracting 40 from 66.
Include the next digit (5) from the dividend after 26, then repeat: 265 / 40

Step 3:
The number 40 fits into 265 6 times, leaving a remainder of 25.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we subtract 240 from 265, we get 25.
Fetch the next digit (4) from the dividend, attach it to 25 and continue: 254 / 40

Let's proceed to step 4:
If we divide 254 by 40, we get 6 and a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 166.0
The remainder is 14 after subtracting 240 from 254.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 40

Let's proceed to step 5:
40 goes into 145 3 times with a remainder of 25.
Use 3 as the next digit of our solution. 
Result so far: 1663.0
If we subtract 120 from 145, we get 25.
Bring next digit (3) of the dividend behind the 25 and repeat the process: 253 / 40

Step 6:
253 divided by 40 is 6 with a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 16636.0
Deduct 240 from 253 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
130 divided by 40 is 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 16636.3
If we take 120 away from 130, we end up 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.

Moving on to step 8:
100 divided by 40 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 16636.32
Subtracting 80 from 100 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
The number 40 fits into 200 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 16636.325
The remainder is 0 after subtracting 200 from 200.
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 10:
40 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 16636.325
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.

Let's proceed to step 11:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 16636.325
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.

After the division, we end up with 16636.325 and a remainder of 0.0.