In Yucai Primary School, the ratio of the number of students who reached the physical education standard to the number of students who did not meet the standard was 3:5. Later, 30 students reached the standard. At this time, the number of students who reached the standard was the number of students who did not meet the standard (9/11). How many students are there in Yucai Primary School?
育才小学原来体育达标人数与未达标人数比是3：5，后来又有30名同学达标，这时达标人数是未达标人数的(9/11)，育才小学共有学生多少名？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">11 + 9</gadget>
<output>20</output>

<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(5/8) - (11/20)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">30 / (3/40)</gadget>
<output>400</output>

<result>400</result>