Xiao Ming reads a 120-page storybook every day (1/10). He has read it for 3 days, and how much of it is left unread?
小明看一本120页的故事书，每天看(1/10)，已经看了3天，还有几分之几没有看？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 3</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<result>7/10 = around 0.7</result>