A person’s weight on Mars is 3/8 of that on Earth, and Xiaohua’s weight on Earth is 40 kilograms. If he were on Mars, how much would Xiaohua’s weight be?
人在火星上的体重是地球上的(3/8)，小华在地球上的体重是40千克，如果在火星上，小华的体重是多千克？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">40 * (3/8)</gadget>
<output>15</output>

<result>15</result>