Xiaohong reads a story book and reads 39 pages in 3 days. At this speed, how many pages can she read in 8 days?
小红看一本故事书，3天看了39页，照这样的速度，8天可以看多少页．
<gadget id="calculator">39 / 3</gadget>
<output>13</output>

<gadget id="calculator">13 * 8</gadget>
<output>104</output>

<result>104</result>