3 * (16 * 5) = <<3*(16*5)=240>>240 square feet

2 * (8 * 4) = <<2*(8*4)=64>>64 square feet

240 + 64 = <<240+64=304>>304 square feet

The gardens have a total of 304 square feet.

# Answer

304
<|im_start|>system
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<|im_start|>user
Mancino is tending 3 gardens that each measure 16 feet by 5 feet. His sister, Marquita, is tilling the soil for two gardens that each measure 8 feet by 4 feet. How many square feet combined are in all their gardens?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
304
Mancino is tending 3 gardens that each measure 16 feet by 5 feet. His sister, Marquita, is tilling the soil for two gardens that each measure 8 feet by 4 feet. How many square feet combined are in all their gardens?
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