Mom gave Xiaohu 11.10 yuan, which happened to buy 2.5 kilograms of oranges and 2 kilograms of apples. As a result, he reversed the quantities, leaving 0.06 yuan. How much is a kilogram of apples?
妈妈给小虎11.10元，正好买2.5千克的桔子、2千克苹果，结果他把数量弄颠倒了，从而剩下0.06元，那么每千克苹果多少元？
<gadget id="calculator">11.1 / 2.5</gadget>
<output>4.44</output>

<gadget id="calculator">4.44 * 2</gadget>
<output>8.88</output>

<gadget id="calculator">11.1 - 8.88 - 0.06</gadget>
<output>2.16</output>

<gadget id="calculator">2 / 2.5</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 * 2</gadget>
<output>1.6</output>

<gadget id="calculator">2.5 - 1.6</gadget>
<output>0.9</output>

<gadget id="calculator">2.16 / 0.9</gadget>
<output>2.4</output>

<result>2.4</result>