We divide 400605 by 40
We're looking to find how many times 40 goes into 400605.

Moving on to step 1:
4 divided by 40 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 40

On to step 2:
If we divide 40 by 40, we get 1 and a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 0 after subtracting 40 from 40.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 40

Going ahead to step 3:
When dividing 0 by 40, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 0, we get 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 40

Step 4:
The number 40 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Subtract 0 from 6 to get 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 40

Moving on to step 5:
When dividing 60 by 40, we get 1 with a remainder of 20.
The next digit of our result is 1. 
Result so far: 1001.0
Subtracting 40 from 60 leaves us with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 40

Step 6:
40 goes into 205 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 10015.0
If we subtract 200 from 205, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
The number 40 fits into 50 1 times, leaving a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 10015.1
If we take 40 away from 50, 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:
If we divide 100 by 40, we get 2 and a remainder of 20.
The next digit of our result is 2. 
Result so far: 10015.12
The remainder is 20 after subtracting 80 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
200 divided by 40 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 10015.125
If we take 200 away from 200, 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.

On to step 10:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10015.125
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.

Moving on to step 11:
When dividing 0 by 40, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10015.125
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.

The final outcome is 10015.125, with a leftover of 0.0.