Xiaogang has 12 extracurricular books, which is equivalent to (3/4) of Xiaoli's extracurricular books. How many extracurricular books do these two have?
小刚有12本课外书，相当于小丽课外书本数的(3/4)，这两人一共有多少本课外书？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 / (3/4)</gadget>
<output>16</output>

<gadget id="calculator">16 + 12</gadget>
<output>28</output>

<result>28</result>