A rectangular vegetable field is 10 meters long and 8 meters wide. A square reservoir with a side length of 2 meters is dug in the middle of the vegetable field. What is the remaining area for growing vegetables?
一块长方形菜地，长10米，宽8米，在菜地中间挖一个边长2米的正方形蓄水池，剩余种菜的面积是多少平方米？
<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">80 - 4</gadget>
<output>76</output>

<result>76</result>