There is a pile of apples. After eating (1/4), 324 more apples are bought. At this time, the number of apples in this pile is more than the original (1/5). How many apples are there now?
有一堆苹果，吃了(1/4)后，又买来324个，这时这堆苹果的个数比原来多了(1/5)．现在有多少个苹果？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(6/5) - (3/4)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">324 / (9/20)</gadget>
<output>720</output>

<gadget id="calculator">720 * (6/5)</gadget>
<output>864</output>

<result>864</result>