Xiaofang bought 2.6 kilograms of apples for 9.1 yuan, how much is each kilogram of apples?
小芳买了2.6千克苹果用了9.1元，每千克苹果多少元？
<gadget id="calculator">9.1 / 2.6</gadget>
<output>3.5</output>

<result>3.5</result>