Insects often vibrate their wings when flying. A bee can vibrate its wings 236 times per second, and a locust can vibrate less (109/118) than a bee per second. How many times can a locust vibrate per second?
昆虫飞行时经常振动翅膀．蜜蜂每秒能振动翅膀236次，蝗虫每秒振动次数比蜜蜂少(109/118)．蝗虫每秒能振动多少次？
<gadget id="calculator">109 / 118</gadget>
<output>109/118 = around 0.923729</output>

<gadget id="calculator">1 - (109/118)</gadget>
<output>9/118 = around 0.076271</output>

<gadget id="calculator">236 * (9/118)</gadget>
<output>18</output>

<result>18</result>