100 kilograms of soybeans can extract 13 kilograms of oil. According to this calculation, to extract 6.5 tons of soybean oil, how many tons of soybeans are needed?
100千克黄豆可以榨油13千克，照这样计算，要榨豆油6.5吨，需黄豆多少吨？
<gadget id="calculator">100 / 13</gadget>
<output>100/13 = around 7.692308</output>

<gadget id="calculator">(100/13) * 6.5</gadget>
<output>50</output>

<result>50</result>