Give the step-by-step reasoning process and then the final answer. During his summer break, Luke catches 2 fish every day for 30 days. If each fish gives him 2 fillets, then how many fish fillets does he have?
He catches 2 fish every day for 30 days so he catches 2 * 30 = 60 fish. Each fish yields 2 fillets so he has 2 * 60 = 120 fish fillets.
The final answer: 120.