The independent load should not exceed (3/20) of the body weight. Xiao Ming's weight is 40 kg, and his load should not exceed how many kg.
独立的负荷最好不要超过体重的(3/20)，小明的体重是40千克，他的负荷最好不要超过多少千克．
<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">40 * (3/20)</gadget>
<output>6</output>

<result>6</result>