Mom is 40 years old this year. Xiaohong's age is her mother's (1/4) and her grandmother's (1/6). How old is Xiaohong's grandmother this year?
妈妈今年40岁，小红的年龄是妈妈的(1/4)，又正好是外婆的(1/6)，小红的外婆今年几岁？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/4) / (1/6)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">40 * (3/2)</gadget>
<output>60</output>

<result>60</result>