660078 divided by 25 
We're looking to find how many times 25 goes into 660078.

Moving on to step 1:
25 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 25

Going ahead to step 2:
If we divide 66 by 25, we get 2 and a remainder of 16.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 50 from 66 leaves us with 16.
Include the next digit (0) from the dividend after 16, then repeat: 160 / 25

Moving on to step 3:
25 can be fit into 160 6 times, resulting in a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Subtract 150 from 160 to get 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 25

Advancing to step 4:
If we divide 100 by 25, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 264.0
If we take 100 away from 100, we end up with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 25

Moving on to step 5:
The number 25 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 2640.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 25

On to step 6:
78 divided by 25 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 26403.0
The remainder is 3 after subtracting 75 from 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
25 goes into 30 1 times with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 26403.1
Subtracting 25 from 30 leaves us with 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 8:
The number 25 fits into 50 2 times, leaving a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 26403.12
Subtracting 50 from 50 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.

Advancing to step 9:
0 divided by 25 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26403.12
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.

Let's proceed to step 10:
25 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 26403.12
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.

The final outcome is 26403.12, with a leftover of 0.0.