When Xiaohong calculated the area of a parallelogram vegetable field, she mistakenly regarded the bottom 42 meters as 24 meters, and the resulting area was 270 square meters less than the correct one. What is the correct area of the vegetable field in square meters?
小红在计算一块平行四边形菜地的面积时，错把底42米看成了24米，结果得到的面积比正确的少270平方米，菜地的正确面积是多少平方米．
<gadget id="calculator">42 - 24</gadget>
<output>18</output>

<gadget id="calculator">270 / 18</gadget>
<output>15</output>

<gadget id="calculator">15 * 42</gadget>
<output>630</output>

<result>630</result>