Grandma is 56 years old this year, Xiaolan's age is grandma's (1/7), and father's age is 4 times Xiaolan's. Guess how old Xiaolan's father is this year.
奶奶今年56岁，小兰的年龄是奶奶的(1/7)，爸爸的年龄是小兰的4倍，猜猜小兰的爸爸今年多少岁．
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">56 * (1/7) * 4</gadget>
<output>32</output>

<result>32</result>