Xiaoli is 6 years old this year. Xiaoli's grandma said that when Xiaoli is 9 years old, grandma will be 55 years old. So how old is grandma this year?
小力今年6岁，小力的奶奶说等小力9岁的时候奶奶就55岁了，那么奶奶今年多少岁．
<gadget id="calculator">55 - 9</gadget>
<output>46</output>

<gadget id="calculator">46 + 6</gadget>
<output>52</output>

<result>52</result>