A rectangular lawn is 48 meters long and 27 meters wide. Xiao Ming ran 3 laps along the edge of the lawn. How many meters did she run?
一块长方形草坪，长48米，宽27米，小明沿草坪边缘跑了3圈，她跑了多少米？
<gadget id="calculator">48 + 27</gadget>
<output>75</output>

<gadget id="calculator">75 * 2</gadget>
<output>150</output>

<gadget id="calculator">150 * 3</gadget>
<output>450</output>

<result>450</result>