Dad's weight is 86 kg, which is 4 times that of Xiaohong. How many kilograms does Xiaohong weigh?
爸爸的体重为86千克，是小红的4倍．小红的体重是多少千克？
<gadget id="calculator">86 / 4</gadget>
<output>43/2 = around 21.5</output>

<result>43/2 = around 21.5</result>