A barrel of gasoline is used (1/5), and 10 kilograms are used. How many kilograms is this barrel of gasoline?
一桶汽油用了(1/5)，用了10千克，这桶汽油有多少千克？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">10 / (1/5)</gadget>
<output>50</output>

<result>50</result>