Xiao Ming's father brought back 20 fruits from abroad. On the first day Xiao Ming ate (2/5) of these fruits, and on the second day Xiao Ming ate the rest (1/4). How many fruits are left?
小明的爸爸从国外带回20个水果，第一天小明吃了这些水果的(2/5)，第二天小明又吃了剩下的(1/4)，还剩下多少个水果？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) * (1/4)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (2/5) - (3/20)</gadget>
<output>9/20 = around 0.45</output>

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

<result>9</result>