400064 ÷ 25 
Let's see how many times 25 fits into 400064.

On to step 1:
25 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 25

Step 2:
When dividing 40 by 25, we get 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
If we take 25 away from 40, we end up with 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 25

Going ahead to step 3:
When dividing 150 by 25, we get 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 16.0
If we subtract 150 from 150, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 25

Let's proceed to step 4:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 160.0
Subtracting 0 from 0 leaves us with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 25

On to step 5:
When dividing 6 by 25, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 1600.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 25

Moving on to step 6:
The number 25 fits into 64 2 times, leaving a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 16002.0
The remainder is 14 after subtracting 50 from 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
25 goes into 140 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 16002.5
Subtracting 125 from 140 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
If we divide 150 by 25, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 16002.56
The remainder is 0 after subtracting 150 from 150.
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 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16002.56
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.

Let's proceed to step 10:
If we divide 0 by 25, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16002.56
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.

The final outcome is 16002.56, with a leftover of 0.0.