Xiao Ming is 9 years old this year, and his grandfather is 7 times older than him. 4 years old, how old is his grandfather this year?
小明今年9岁，爷爷的年龄是他的7倍多4岁，爷爷今年多少岁．
<gadget id="calculator">9 * 7</gadget>
<output>63</output>

<gadget id="calculator">63 + 4</gadget>
<output>67</output>

<result>67</result>