Xiaojun is 11 years old this year, and his grandfather is 3 years younger than Xiaojun, who is 6 times younger than Xiaojun. How old is grandpa this year?
小军今年11岁，爷爷的年龄比小军的6倍少3岁，爷爷今年几岁？
<gadget id="calculator">11 * 6</gadget>
<output>66</output>

<gadget id="calculator">66 - 3</gadget>
<output>63</output>

<result>63</result>