Dad's height is 180 cm, Xiao Gang's height is Dad's (7/9), what is Xiao Gang's height in cm?
爸爸的身高是180厘米，小刚的身高是爸爸的(7/9)，小刚的身高是多少厘米？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">180 * (7/9)</gadget>
<output>140</output>

<result>140</result>