In a certain long jump test, there were 15 people who achieved excellent results, and the excellent rate was 30%. How many people did not achieve excellent results?
某次跳远测试，成绩优秀的有15人，优秀率为30%，达不到优秀的有多少人？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">15 / (3/10)</gadget>
<output>50</output>

<gadget id="calculator">50 - 15</gadget>
<output>35</output>

<result>35</result>