A book has 180 pages. Xiao Ming read (1/4) on the first day and the rest (2/5) on the second day. How many pages did he read on the second day?
一本书有180页，小明第一天看了(1/4)，第二天看了余下的(2/5)，第二天看了多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">180 * (1/4)</gadget>
<output>45</output>

<gadget id="calculator">180 - 45</gadget>
<output>135</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">135 * (2/5)</gadget>
<output>54</output>

<result>54</result>