(3/5) of a barrel of oil is 45 kilograms. How many kilograms does the barrel of oil weigh?
一桶油的(3/5)是45千克，这桶油共重多少千克．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 / (3/5)</gadget>
<output>75</output>

<result>75</result>