Xiao Ming is 13 years old this year, his grandfather is five times younger than him and three years younger, what is his grandfather's age this year? (column equation solution)
小明今年13岁，爷爷的年龄是他的5倍少三岁，爷爷今年是多少？(列方程解答)
<gadget id="calculator">13 * 5</gadget>
<output>65</output>

<gadget id="calculator">65 - 3</gadget>
<output>62</output>

<result>62</result>