Xiaohua reads a 100-page book for a week, 8 pages a day, how many pages are left?
小华读一本100页的书，读了一个星期，每天读8页，还剩几页？
<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<gadget id="calculator">100 - 56</gadget>
<output>44</output>

<result>44</result>