The rated power of Wang Hong's refrigerator is 200 watts. Wang Hong's family went out to play for 3 days, but the refrigerator was still working intermittently. It recorded that the electric energy meter showed two times when they went out and went home 2486.2 and 2489.2, how many hours does the refrigerator work every day?

2489.2-2486.2=3
Three times a day, three times a day
1000/200=5
Work five hours a day

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