In the final exam, Xiaojun scored an average of 90 points in the four subjects of Chinese, mathematics, foreign language, and science. After the results of the social class were announced, his average grade dropped by 2 points. How many points did Xiaojun score in the social test?
期末考试小军语文、数学、外语、科学四门功课的平均分是90分．社会课的成绩公布以后，他的平均成绩下降了2分．小军的社会考了多少分？
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">90 - 10</gadget>
<output>80</output>

<result>80</result>