Grandpa is 60 years old this year, father's age is grandpa's (2/3), mother's age is father's (4/5), Xiao Ming's age is mother's (3/16), how old is Xiao Ming this year?
爷爷今年60岁，爸爸的年龄是爷爷的(2/3)，妈妈的年龄是爸爸的(4/5)，小明的年龄是妈妈的(3/16)，小明今年有多大？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 / 16</gadget>
<output>3/16 = around 0.1875</output>

<gadget id="calculator">60 * (2/3) * (4/5) * (3/16)</gadget>
<output>6</output>

<result>6</result>