The children's bookstore sells "Science World", 19 copies are sold in the morning, and 21 copies are sold in the afternoon. What percentage of the sales in the afternoon are the sales in the morning?
儿童书店卖《科学世界》，上午卖出19本，下午卖出21本，下午卖出的是上午卖出的几分之几？
<gadget id="calculator">21 / 19</gadget>
<output>21/19 = around 1.105263</output>

<result>21/19 = around 1.105263</result>