Grandpa is 75 years old this year, and Xiao Ming's age is (1/5) of grandpa's. How old is Xiao Ming this year?
爷爷今年75岁，小明的年龄是爷爷的(1/5)，小明今年是多少岁？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">75 * (1/5)</gadget>
<output>15</output>

<result>15</result>