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so what i was doing is this...i was converting from W-s to kW-hr

2.12E9 W-s x kW/1000w x 1hr/3600s=588.89 kW-s

then i found how many hrs in a year 1 yer x 365days/1yer x 24hr/1day=8760

then i took the product of the two to find the amount of energy produced hourly per year which i got 5158676.4

then i multipied that by $.018 (1.8 cents)

but my answer was wrong

please tell me what is not right