It is known that the weight of 3 pineapples plus 1 apple is equal to the weight of 1 pineapple plus 5 apples, and the weight of 1 pineapple is how many times the weight of 1 apple.
已知3个菠萝加上1个苹果的重量与一个菠萝加上5个苹果的重量相等，1个菠萝的重量是1个苹果重量的多少倍．
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<result>2</result>