Xiaoxiao ran 6 laps along the rectangular flower bed with a difference of 30 meters in length and width, and ran a total of 1680 meters. Find the area of this flower bed? (in two ways)
笑笑沿着长和宽相差30米的长方形花坛跑了6圈，共跑了1680米，求这个花坛的面积？(用两种方法)
<gadget id="calculator">1_680 / 6</gadget>
<output>280</output>

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

<gadget id="calculator">280 - 60</gadget>
<output>220</output>

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

<gadget id="calculator">220 / 4</gadget>
<output>55</output>

<gadget id="calculator">55 + 30</gadget>
<output>85</output>

<gadget id="calculator">85 * 55</gadget>
<output>4_675</output>

<result>4_675</result>