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?
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.
#### 304