A book is 320 pages, naughty read it on the first day (3/8), how many pages should I read on the second day.
一本书320页，淘气第一天看完了(3/8)，第二天应该从第多少页看起．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">320 * (3/8)</gadget>
<output>120</output>

<gadget id="calculator">120 + 1</gadget>
<output>121</output>

<result>121</result>