Let's divide 251910 by 18
We're looking to find how many times 18 goes into 251910.

Step 1:
When dividing 2 by 18, we get 0 with 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.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 18

Let's proceed to step 2:
25 divided by 18 is 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 18 from 25 leaves us with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 18

Step 3:
When dividing 71 by 18, we get 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 54 away from 71, we end up with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 18

Advancing to step 4:
18 can be fit into 179 9 times, resulting in a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
If we take 162 away from 179, we end up with 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 18

On to step 5:
If we divide 171 by 18, we get 9 and a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 1399.0
If we take 162 away from 171, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 18

Going ahead to step 6:
If we divide 90 by 18, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 13995.0
If we subtract 90 from 90, 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.

Moving on to step 7:
0 divided by 18 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13995.0
Deduct 0 from 0 and we're left 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 8:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 13995.0
Deduct 0 from 0 and we're left 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 result is 13995.0 with a remainder of 0.0.