Xiaoli bought 5 lilies for 20 yuan, and Xiaohong bought 1 rose for 8 yuan. Who bought the most expensive flowers? How much does each stick cost?
小丽买了5枝百合花了20元钱，小红买了1枝玫瑰花了8元钱，谁买的花贵？每枝贵几元钱？
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<result>4</result>