A steel rail weighs 38 kilograms per meter, and how many kilograms does this steel rail weigh at 14.4 meters?
一种钢轨每米重38千克，14.4米这种钢轨重多少千克．
<gadget id="calculator">38 * 14.4</gadget>
<output>547.2</output>

<result>547.2</result>