A rectangular vegetable field has the same area as a square vegetable field. It is known that the side length of a square vegetable field is 18 meters, and the length of a rectangular vegetable field is 27 meters. What is the perimeter of this rectangular vegetable patch?
一块长方形菜地与一块正方形菜地面积相等，已知正方形菜地的边长是18米，长方形菜地的长是27米．这个长方形菜地的周长是多少？
<gadget id="calculator">18 / 27</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 * (2/3)</gadget>
<output>12</output>

<gadget id="calculator">18 + 12</gadget>
<output>30</output>

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

<result>60</result>