Xiao Ming is 12 years old this year, his grandfather is 6 times his age and 7 years old, how old is his grandfather this year?
小明今年12岁，爷爷的年龄是他的6倍多7岁，爷爷今年多少岁？
<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<gadget id="calculator">72 + 7</gadget>
<output>79</output>

<result>79</result>