As you do the division, you first use the first two digits "25" to find how many times 14 gets into 25. Your answer is 1 (one), so you write 14 times 1 (which is 14) right below the 25, and subtract it from 25.
The answer from the subtraction is 11 (eleven).
Now, bring down the last number you haven't analyzed yet (the last 2 of 252):
now you have "112" which you need to find how many times 14 gets in it: the answer is exactly 8 times because 14 times 8 = 112
So now you write 112 right below the 112 you had formed, do the subtraction to find the "remainder", and you obviously get zero (0) since you are subtracting the same number.
Therefore, the remainder of your division is ze