Xiaoqiao is 10 years old this year, her mother is three times older than her by one year, and her grandma is exactly twice her mother's age. How old is grandma?
小巧今年10岁，妈妈的年龄比她的3倍多1岁，奶奶的年龄正好是妈妈的2倍．奶奶今年几岁？
<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<gadget id="calculator">31 * 2</gadget>
<output>62</output>

<result>62</result>