If the average age of 5 people is 36 years old, and none of these 5 people is younger than 30 years old, then their oldest age is not more than how many years old.
如果5个人的平均年龄是36岁，并且这5个人中没有小于30岁的，那么他们的年龄最大不超过多少岁．
<gadget id="calculator">36 * 5</gadget>
<output>180</output>

<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<gadget id="calculator">180 - 120</gadget>
<output>60</output>

<result>60</result>