In a math test, Wang Qiang scored 94 points. If Wang Qiang's grades are not counted, the average score of the rest of the class is 85. If Wang Qiang's grades are included, the average score of the whole class is 85.2. How many people are there in the class?
一次数学考试，王强得了94分．如果不计算王强的成绩，则全班其余同学平均85分．如果把王强的成绩计算在内，则全班平均85.2分．全班共有多少人？
<gadget id="calculator">94 - 85</gadget>
<output>9</output>

<gadget id="calculator">85.2 - 85</gadget>
<output>0.2</output>

<gadget id="calculator">9 / 0.2</gadget>
<output>45</output>

<result>45</result>