The storybook Miao Xiang borrowed has 218 pages in total. She has read 98 pages and finished the rest within 4 days. How many pages do she read on average every day?
妙想借的故事书共有218页，她已经看了98页，剩下的在4天内看完，平均每天要看多少页？
<gadget id="calculator">218 - 98</gadget>
<output>120</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<result>30</result>