If 1 apple is equal to 2 oranges, and 1 pineapple is equal to the mass of 5 apples, then how many oranges is equal to 1 pineapple?
1个苹果等于2个橘子的，1个菠萝等于5个苹果的质量，那么1个菠萝等于多少个橘子的质量．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>