summer camp consisting of 40 students shot 10 bullets each during a shooting training session, and a total of 78 bullets missed the target. What is the hit rate of this shooting training?
由40名同学组成的夏令营在一次射击训练中，每人射击10发子弹，共有78发子弹脱靶．这次射击训练的命中率是多少？
<gadget id="calculator">40 * 10</gadget>
<output>400</output>

<gadget id="calculator">400 - 78</gadget>
<output>322</output>

<gadget id="calculator">322 / 400</gadget>
<output>161/200 = around 0.805</output>

<result>161/200 = around 0.805</result>