The bookstore shipped a batch of children's storybooks, sold 30% of them on the first day, and 120% of the first day's sales on the second day. How much of this batch of storybooks were sold in two days?
书店运来一批儿童故事书，第一天卖出30%，第二天卖的相当于第一天的120%，两天一共卖出这批故事书的多少．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">120 / 100</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(3/10) * (6/5)</gadget>
<output>9/25 = around 0.36</output>

<gadget id="calculator">(9/25) + (3/10)</gadget>
<output>33/50 = around 0.66</output>

<result>33/50 = around 0.66</result>