We're dividing 40159 by 25 
Let's see how many times 25 fits into 40159.

Moving on to step 1:
4 divided by 25 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.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 25

On to step 2:
25 goes into 40 1 times with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 25 away from 40, we end up with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 25

Let's proceed to step 3:
25 can be fit into 151 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 150 away from 151, we end up with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 25

Step 4:
25 goes into 15 0 times with a remainder of 15.
The next digit of our result is 0. 
Result so far: 160.0
The remainder is 15 after subtracting 0 from 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 25

On to step 5:
25 can be fit into 159 6 times, resulting in a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 1606.0
Subtract 150 from 159 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 6:
25 goes into 90 3 times with a remainder of 15.
The next digit of our result is 3. 
Result so far: 1606.3
If we subtract 75 from 90, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
The number 25 fits into 150 6 times, leaving a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 1606.36
Subtract 150 from 150 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.

Advancing to step 8:
If we divide 0 by 25, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1606.36
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.

Step 9:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1606.36
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.

In conclusion, the division gives 1606.36 with a balance of 0.0.