A box of apples, I ate 18, just right (2/5). How many apples are there in this box?
一箱苹果，吃了18个，正好吃了(2/5)．这箱苹果原有多少个．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">18 / (2/5)</gadget>
<output>45</output>

<result>45</result>