A food factory organizes employees to be vaccinated against hepatitis B. As a result, 291 people have been vaccinated, and 9 people have not been vaccinated. What is the vaccination rate in the food factory?
食品厂组织职工注射乙肝疫苗，结果有291人注射了疫苗，9人没有注射，食品厂疫苗注射率是多少？
<gadget id="calculator">291 + 9</gadget>
<output>300</output>

<gadget id="calculator">291 / 300</gadget>
<output>97/100 = around 0.97</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(97/100) * 1</gadget>
<output>97/100 = around 0.97</output>

<result>97/100 = around 0.97</result>