In a gymnasium, 20 wooden floors with a length of 20 meters, a width of 3.5 meters, and a thickness of 0.3 meters are laid. What is the floor area of the gym?
一个健身房里，铺设了20块长20米、宽3.5米、厚0.3米的木质地板，这个健身房占地面积是多少？
<gadget id="calculator">20 * 3.5 * 20</gadget>
<output>1_400</output>

<result>1_400</result>