One barrel of oil used more than half of 4 kg, leaving 96 kg. How much does this barrel of oil weigh in kilograms?
有一桶油用去的比一半多4千克，还剩下96千克．这桶油原重多少千克．
<gadget id="calculator">96 + 4</gadget>
<output>100</output>

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

<result>200</result>