251660 ÷ 90 
We want to divide 251660 by 90.

Step 1:
The number 90 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 90

Step 2:
25 divided by 90 is 0 with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 90

On to step 3:
90 goes into 251 2 times with a remainder of 71.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 71 after subtracting 180 from 251.
Bring next digit (6) of the dividend behind the 71 and repeat the process: 716 / 90

On to step 4:
90 goes into 716 7 times with a remainder of 86.
Use 7 as the next digit of our solution. 
Result so far: 27.0
The remainder is 86 after subtracting 630 from 716.
Bring next digit (6) of the dividend behind the 86 and repeat the process: 866 / 90

Let's proceed to step 5:
The number 90 fits into 866 9 times, leaving a remainder of 56.
The number 9 becomes the next digit in our result. 
Result so far: 279.0
Deduct 810 from 866 and we're left with 56.
Take the next digit (0) from the dividend and append it to 56, then repeat: 560 / 90

Let's proceed to step 6:
90 can be fit into 560 6 times, resulting in a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 2796.0
Deduct 540 from 560 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
90 goes into 200 2 times with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 2796.2
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
If we divide 200 by 90, we get 2 and a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 2796.22
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 2796.22 with a remaining 0.02.