666171 divided by 25 
We want to divide 666171 by 25.

Let's proceed to step 1:
25 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 25

Going ahead to step 2:
66 divided by 25 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 50 from 66 and we're left with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 25

Step 3:
If we divide 166 by 25, we get 6 and a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Subtract 150 from 166 to get 16.
Include the next digit (1) from the dividend after 16, then repeat: 161 / 25

Going ahead to step 4:
When dividing 161 by 25, we get 6 with a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 266.0
Subtract 150 from 161 to get 11.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 25

Let's proceed to step 5:
117 divided by 25 is 4 with a remainder of 17.
Put 4 as the next digit of the answer. 
Result so far: 2664.0
Subtracting 100 from 117 leaves us with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 25

Going ahead to step 6:
25 goes into 171 6 times with a remainder of 21.
Put 6 as the next digit of the answer. 
Result so far: 26646.0
If we subtract 150 from 171, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
25 can be fit into 210 8 times, resulting in a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 26646.8
Subtract 200 from 210 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
25 can be fit into 100 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 26646.84
The remainder is 0 after subtracting 100 from 100.
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 9:
25 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26646.84
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.

Moving on to step 10:
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: 26646.84
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 26646.84, with a leftover of 0.0.