There are 30 students in 52, and 3 students failed to meet the standard in the 800-meter race. What is the rate of reaching the standard?
五2有30名学生，在800米跑中有3名学生没有达标，达标率是多少？
<gadget id="calculator">30 - 3</gadget>
<output>27</output>

<gadget id="calculator">27 / 30</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>