Li Xiaohong ran 4 back and forth along the 125-meter straight track. How many meters did she run in total?
李小红沿125米的直线跑道跑了4个来回，她一共跑了多少米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">125 * 8</gadget>
<output>1_000</output>

<result>1_000</result>