My sister bought green vegetables for 1.5 yuan today, and the pork she bought cost twice as much as the green vegetables. How much more is the pork than the green vegetables?
姐姐今天买了1.5元的青菜，买的猪肉的钱是青菜的两倍，猪肉比青菜多多少元？
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">1.5 * 1</gadget>
<output>1.5</output>

<result>1.5</result>