Xiaohong said: My weight is 36 kg. Dad said: Xiaohong's weight is mine (6/13). How much does dad weigh?
小红说：我的体重是36千克．爸爸说：小红的体重是我的(6/13)．爸爸的体重是多少？
<gadget id="calculator">6 / 13</gadget>
<output>6/13 = around 0.461538</output>

<gadget id="calculator">36 / (6/13)</gadget>
<output>78</output>

<result>78</result>