We look at the division of 400605 by 25 
We're looking to find how many times 25 goes into 400605.

Advancing to step 1:
If we divide 4 by 25, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 25

Let's proceed to step 2:
The number 25 fits into 40 1 times, leaving a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 15 after subtracting 25 from 40.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 25

Let's proceed to step 3:
25 goes into 150 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 150 from 150 leaves us with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 25

Let's proceed to step 4:
6 divided by 25 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 160.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 25

Advancing to step 5:
60 divided by 25 is 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 1602.0
If we take 50 away from 60, we end up with 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 25

Moving on to step 6:
The number 25 fits into 105 4 times, leaving a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 16024.0
If we subtract 100 from 105, 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.

Let's proceed to step 7:
When dividing 50 by 25, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 16024.2
If we take 50 away from 50, 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.

Moving on to step 8:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 16024.2
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.

Going ahead to step 9:
The number 25 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16024.2
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.

The final result is 16024.2 with a remainder of 0.0.