Xiaoming's weight is 35kg, Xiaoming's weight is lighter than his father's (2/7), how much is Xiaoming's father's weight in kilograms?
小明的体重是35kg，小明的体重比爸爸轻(2/7)，小明爸爸体重是多少千克？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">35 / (5/7)</gadget>
<output>49</output>

<result>49</result>