Mom reads a book. She reads 18 pages on the first day, 10% less of the whole book than on the second day. In these two days, she reads 70% of the whole book. How many pages did she read on the second day?
妈妈看一本书，第一天看了18页，比第二天少看全书的10%，这两天一共看了全书的70%，第二天看了多少页？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(7/10) - (1/10)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) / 2</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">18 / (3/10)</gadget>
<output>60</output>

<gadget id="calculator">60 * (7/10)</gadget>
<output>42</output>

<gadget id="calculator">42 - 18</gadget>
<output>24</output>

<result>24</result>