The grades of class 6 and 2 in the last semester final math test are: the average score of the whole class is 90 points, the average score of boys is 88 points, and the average score of girls is 93 points. There are 18 girls in this class, how many boys are there? (equation solution)
六2班上学期期末数学考试成绩是：全班平均90分，男生平均88分，女生平均93分．这个班有女生18人，男生有多少人？(方程解)
<gadget id="calculator">93 * 18</gadget>
<output>1_674</output>

<gadget id="calculator">90 * 18</gadget>
<output>1_620</output>

<gadget id="calculator">1_674 - 1_620</gadget>
<output>54</output>

<gadget id="calculator">90 - 88</gadget>
<output>2</output>

<gadget id="calculator">54 / 2</gadget>
<output>27</output>

<result>27</result>