The area of a parallelogram is 30 square meters. If the base is divided by 10 and the height is multiplied by 5, what is the area of the parallelogram in square meters?
一个平行四边形的面积是30平方米，如果底除以10，高乘5，现在平行四边形的面积是多少平方米．
<gadget id="calculator">30 / 10</gadget>
<output>3</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>