Two wires of the same length, one enclosing a square with a side length of 30 cm, and the other enclosing a rectangle with a length of 37 cm. Which figure has the largest area? How big is it?
两根同样长的铁丝，一根围成了一个边长为30厘米的正方形，另一根围成了一个长是37厘米的长方形．哪个图形的面积大？大多少？
<gadget id="calculator">30 * 30</gadget>
<output>900</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">60 - 37</gadget>
<output>23</output>

<gadget id="calculator">23 * 37</gadget>
<output>851</output>

<gadget id="calculator">900 - 851</gadget>
<output>49</output>

<result>49</result>