The physical education standard rate of Class 1 is 90%, and how many people fail to meet the standard?
六1班体育达标率为90%，未达标的占多少
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>