A parallelogram vegetable field, the difference between the base and the height is 30 meters, their ratio is 3:2, what is the area of this vegetable field in square meters?
一块平行四边形菜地，底和高的差是30米，他们的比是3：2，求这块菜地的面积是多少平方米？
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">30 / 1</gadget>
<output>30</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">90 * 60</gadget>
<output>5_400</output>

<result>5_400</result>