1000 people signed up for the entrance examination, and finally 150 people were admitted. There is a difference of 38 points between the average score of the admitted applicants and the average score of the unadmitted candidates. The average score of all candidates is 55 points, and the admission score line is 6.3 points lower than the average score of the admitted applicants. Ask how much the admission score is.
有1000人报名参加入学考试，最后录取了150人．录取者的平均成绩与没有录取者的平均成绩相差38分，全体考生的平均成绩是55分，录取分数线比录取者的平均成绩少6.3分．问录取分数线是多少分．
<gadget id="calculator">1_000 * 38</gadget>
<output>38_000</output>

<gadget id="calculator">1_000 * 55</gadget>
<output>55_000</output>

<gadget id="calculator">150 * 38</gadget>
<output>5_700</output>

<gadget id="calculator">55_000 - 5_700</gadget>
<output>49_300</output>

<gadget id="calculator">38_000 + 49_300</gadget>
<output>87_300</output>

<gadget id="calculator">1_000 - 150</gadget>
<output>850</output>

<gadget id="calculator">150 + 850</gadget>
<output>1_000</output>

<gadget id="calculator">87_300 / 1_000</gadget>
<output>873/10 = around 87.3</output>

<gadget id="calculator">(873/10) - 6.3</gadget>
<output>81</output>

<result>81</result>