A barrel of oil weighs 200 kg, how many tons does 10 barrels of oil weigh?
一桶油重200千克，10桶油重多少吨．
<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">200 * (1/100)</gadget>
<output>2</output>

<result>2</result>