For a rectangle, if its length is reduced by 3 meters or its width is reduced by 2 meters, then its area is reduced by 36 square meters. Find the original area of the rectangle.
一个长方形，如果它的长减少3米，或它的宽减少2米，那么它的面积都减少36平方米，求这个长方形原来的面积．
<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">36 / 3</gadget>
<output>12</output>

<gadget id="calculator">18 * 12</gadget>
<output>216</output>

<result>216</result>