Mom's weight is 55 kg, which happens to be dad's weight (5/7), Xiaoxiao's weight is exactly dad's (4/11), what is Xiaoxiao's weight in kilograms?
妈妈的体重是55千克，恰好是爸爸体重的(5/7)，笑笑的体重正好是爸爸的(4/11)，笑笑的体重是多少千克？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">55 / (5/7)</gadget>
<output>77</output>

<gadget id="calculator">4 / 11</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">77 * (4/11)</gadget>
<output>28</output>

<result>28</result>