This year, Lingling is 8 years old, and her grandmother is 60 years old. In a few more years, her grandmother will be five times as old as Lingling.
今年，玲玲8岁，奶奶60岁，再过多少年，奶奶的年龄是玲玲的5倍．
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">60 - 40</gadget>
<output>20</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<result>5</result>