A batch of storybooks sold 44% on the first day, and 160 copies were sold on the second day, leaving 120 copies left. How many storybooks are there in total?
一批故事书第一天售出44%，第二天售出160本，还剩120本，这批故事书一共有多少本？
<gadget id="calculator">160 + 120</gadget>
<output>280</output>

<gadget id="calculator">44 / 100</gadget>
<output>11/25 = around 0.44</output>

<gadget id="calculator">1 - (11/25)</gadget>
<output>14/25 = around 0.56</output>

<gadget id="calculator">280 / (14/25)</gadget>
<output>500</output>

<result>500</result>