Xiaomin's weight is 30 kg, which is (5/6) of his brother's weight, and his brother's weight is (1/2) of his father's weight. How much is his father's weight in kilograms?
小民的体重是30千克，是他哥哥体重的(5/6)，，他哥哥的体重是他爸爸体重的(1/2)，他爸爸的体重是多少千克？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">30 / (5/6) / (1/2)</gadget>
<output>72</output>

<result>72</result>