A rectangular vegetable field is 36 meters long and 12 meters longer than its width, surrounded by a fence. How big is this vegetable patch?
一块长方形的菜地，长36米，比宽长12米，在周围围上篱笆．这块菜地有多大？
<gadget id="calculator">36 - 12</gadget>
<output>24</output>

<gadget id="calculator">36 * 24</gadget>
<output>864</output>

<result>864</result>