Xiaohong reads a 120-page story book. She reads 40 pages on the first day and the rest (1/4) on the second day. How many pages of the storybook did Xiaohong not read?
小红看一本120页的故事书，第一天看了40页，第二天看了余下的(1/4)．小红还有多少页故事书没有看？
<gadget id="calculator">120 - 40</gadget>
<output>80</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">80 * (3/4)</gadget>
<output>60</output>

<result>60</result>