The Organizing Committee of the Hope Cup in a certain place arranges examination rooms for candidates taking the Hope Cup examination. If 30 candidates are arranged in each examination room, there will be 26 candidates in one examination room; if 26 candidates are arranged in each examination room, there will be one examination room There are 20 examinees, and 9 more examination rooms are used than the previous scheme, how many candidates are there in the area to take the examination?
某地希望杯组委会给参加希望杯考试的考生安排考场，若每个考场安排30名考生，则会有一个考场有26名考生；若每个考场安排26个考生，则会有一个考场有20名考生，并且要比前一种方案多用9个考场，则该地区参加考试的考生有多少个．
<gadget id="calculator">20 / 26</gadget>
<output>10/13 = around 0.769231</output>

<gadget id="calculator">26 / 30</gadget>
<output>13/15 = around 0.866667</output>

<gadget id="calculator">(10/13) - (13/15)</gadget>
<output>-19/195 = around -0.097436</output>

<gadget id="calculator">9 + (-19/195)</gadget>
<output>1_736/195 = around 8.902564</output>

<gadget id="calculator">1 / 26</gadget>
<output>1/26 = around 0.038462</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/26) - (1/30)</gadget>
<output>1/195 = around 0.005128</output>

<gadget id="calculator">(1_736/195) / (1/195)</gadget>
<output>1_736</output>

<result>1_736</result>