The length of the playground of Hongxing Primary School is 70 meters, and the ratio of width to length is 5 meters. Liangliang ran 2 laps around the playground, how many meters did he run?
红星小学操场的长是70米，宽比长短5米．亮亮绕着操场跑了2圈，他跑了多少米？
<gadget id="calculator">70 - 5</gadget>
<output>65</output>

<gadget id="calculator">65 + 70</gadget>
<output>135</output>

<gadget id="calculator">135 * 2 * 2</gadget>
<output>540</output>

<result>540</result>