Xiao Ming has 6 books, the number of Xiao Hong's books is Xiao Ming's (2/3), how many books does Xiao Hong have?
小明有6本书，小红的书的本数是小明的(2/3)，小红有多少本书？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<result>4</result>