A barrel of oil weighs 48 kilograms, and the weight of the barrel after half of the oil is poured out is 25 kilograms. How many kilograms does the original oil weigh?
一桶油，连桶共重48千克，倒出一半油后连桶重25千克．原来油重多少千克？
<gadget id="calculator">48 - 25</gadget>
<output>23</output>

<gadget id="calculator">23 * 2</gadget>
<output>46</output>

<result>46</result>