April 23rd is "World Book Day". Xiaohua reads a science book, and has already read the whole book (5/8), exactly 80 pages. How many pages does this science book have?
4月23日是"世界读书日"，小华看一本科技书，已经看了全书的(5/8)，正好80页，这本科技书共有多少页？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">80 / (5/8)</gadget>
<output>128</output>

<result>128</result>