In the school's "I am a good shooter" shooting competition, Xiao Ming's shooting percentage is 80%.
在学校"我是神投手"投篮比赛中，小明投球的命中率是80%，他投了20个球，投中多少个球．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20 * (4/5)</gadget>
<output>16</output>

<result>16</result>