In order to enrich children's winter vacation life, Xinhua Bookstore recently shipped a batch of children's books, 28% of which were sold on the first day. 2% of the books were sold the next day, and a total of 480 copies were sold in two days. Do you know how many children's books there are in this batch?
新华书店为了丰富儿童的寒假生活，最近运来一批儿童读物，第一天售出这批读物的28%．第二天售出这批读物的2%，两天一共售出480本．你知道这批儿童读物一共有多少本吗？
<gadget id="calculator">28 / 100</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">(7/25) + (1/50)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">480 / (3/10)</gadget>
<output>1_600</output>

<result>1_600</result>