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) = 
<gadget id="calculator">3*(16*5)</gadget>
<output>240</output>
240 square feet
2 * (8 * 4) = 
<gadget id="calculator">2*(8*4)</gadget>
<output>64</output>
64 square feet
240 + 64 = 
<gadget id="calculator">240+64</gadget>
<output>304</output>
304 square feet.
The gardens have a total of 304 square feet.

<result>304</result>