A story book has 480 pages in total. Xiaohong reads (2/3) of the whole book in 4 days. How many pages does he read on average every day?
一本故事书共480页，小红4天看了全书的(2/3)，他平均每天看多少页？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 4</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">480 * (1/6)</gadget>
<output>80</output>

<result>80</result>