Xiaoming's weight is 30 kilograms, which is Xiaogang's (3/4), Xiaohua's weight is Xiaogang's (4/5), how many kilograms is Xiaohua's weight?
小明体重30千克，是小刚的(3/4)，小华体重是小刚的(4/5)，小华体重多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">30 / (3/4)</gadget>
<output>40</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<result>32</result>