Xiaoqian reads a book of 126 fairy tales, and read 54 pages in the first 3 days. How many days will it take to finish it? (Solve with ratio)
小倩看本126的童话书，前3天看了54页，照这样计算还要多少天才能看完？(用比例解)
<gadget id="calculator">126 - 54</gadget>
<output>72</output>

<gadget id="calculator">3 / 54</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">72 * (1/18)</gadget>
<output>4</output>

<result>4</result>