A steel bar is 6.5 meters long and weighs 12.5 kilograms per meter. How many kilograms does each steel bar weigh?
一种钢筋每根长6.5米，每米重12.5千克，这种钢材每根重多少千克？
<gadget id="calculator">12.5 * 6.5</gadget>
<output>81.25</output>

<result>81.25</result>