Grandma’s family has some poultry, among which there are 28 chickens, the number of ducks is equal to the number of chickens (4/7), and the number of ducks is equal to the number of geese (2/3). How many geese does grandma keep?
奶奶家养了一些家禽，其中鸡有28只，鸭的只数是鸡的只数的(4/7)，鸭的只数是鹅的只数的(2/3)．奶奶养鹅多少只？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/7) / (2/3)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">28 * (6/7)</gadget>
<output>24</output>

<result>24</result>