Uncle Li’s vegetable field is 800 square meters in total. He plans to use (2/5) to grow tomatoes, and the rest to grow cucumbers and eggplants at an area ratio of 3:1. How many square meters is the eggplant?
李大爷家里的菜地共800平方米，他准备用(2/5)种西红柿，剩下的按3：1的面积比种黄瓜和茄子．种茄子的面积是多少平方米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">800 * (2/5)</gadget>
<output>320</output>

<gadget id="calculator">800 - 320</gadget>
<output>480</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">480 / 4</gadget>
<output>120</output>

<result>120</result>