Dad bought 100 pieces of chocolate for Xiao Ming. Xiao Ming ate (2/5) in the first week and the rest (2/5) in the second week. How many pieces of chocolate did he eat in the second week?
爸爸给小明买了100块巧克力，小明第一周吃了(2/5)，第二周吃了剩下的(2/5)，第二周吃了多少块巧克力？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">100 * (2/5)</gadget>
<output>40</output>

<gadget id="calculator">100 - 40</gadget>
<output>60</output>

<gadget id="calculator">60 * (2/5)</gadget>
<output>24</output>

<result>24</result>