The thickness of 5 "word handbooks" is 12 cm, what is the thickness of 30 same "word handbooks" in centimeters?
5本《词语手册》的厚度是12厘米，30本同样的《词语手册》的厚度是多少厘米．
<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">(12/5) * 30</gadget>
<output>72</output>

<result>72</result>