Miao Miao is 8 years old this year. Last year, her grandmother was 10 times her age. How old is her grandmother this year?
苗苗今年8岁，去年奶奶的年龄是她的10倍，奶奶今年多少岁
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 10</gadget>
<output>70</output>

<gadget id="calculator">70 + 1</gadget>
<output>71</output>

<result>71</result>