Xiaoxiao reads a storybook, 90 pages have been read, and (1/3) of the book has not been read, how many pages does this storybook have?
笑笑读一本故事书、已经读了90页、还剩下这本书的(1/3)没有读、这本故事书一共有多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">90 / (2/3)</gadget>
<output>135</output>

<result>135</result>