The average lifespan of a sea turtle is about 160 years, about four times that of a lion. What is the average lifespan of a lion?
海龟的平均寿命大约是160年，约是狮子平均寿命的4倍．狮子的平均寿命大约是多少年？
<gadget id="calculator">160 / 4</gadget>
<output>40</output>

<result>40</result>