Dad weighs 65 kg, just 30% heavier than Xiao Ming. How much does Xiao Ming weigh?
爸爸体重65千克，正好比小明重30%．小明重多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">65 / (13/10)</gadget>
<output>50</output>

<result>50</result>