If Jalil had worked for exactly 40 hours, how much would Jalil have earned? Is that more or less than 18240? If it is more than 18240, divide 18240 by 480 to find how many hours he worked (it will be less than or equal to 40) and you are done- there was no overtime.
If it is less than 18240, subtract that from 18240 to see how much of his earnings were from overtime. His over time pay was ".2% of the base rate" so what is .2% of 480? Add that to 480 to get his overtime rate. Divide the amount his of his overtime earning by that to get his overtime hours. Don't forget to add the 40 regular hours.