Grandpa is 63 years older than Xiaoxin this year, and his age this year is exactly 8 times that of Xiaoxin. How old is grandpa this year? (solution by equation)
爷爷今年的年龄比小新大63岁，爷爷今年的年龄正好是小新的8倍，爷爷今年的年龄是多少岁？(用方程解)
<gadget id="calculator">8 * 63</gadget>
<output>504</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">504 / 7</gadget>
<output>72</output>

<result>72</result>