Xiaoqiang asked his father and mother: "How old are you this year?" Mom said: "The sum of our ages is 72 years old, and he is two years older than me." How old is Xiaoqiang's mother?
小强问爸爸和妈妈："你们今年多大了？"妈妈说："我俩的年龄之和是72岁，他比我大两岁．"小强妈妈多少岁？
<gadget id="calculator">72 - 2</gadget>
<output>70</output>

<gadget id="calculator">70 / 2</gadget>
<output>35</output>

<result>35</result>