In a language test, the highest score in the class is 98 points, and the lowest score is 72 points. Each student's score is an integer, and at least 3 students have the same score. How many people are there in this class?
一次语文考试全班最高分98分，最低分72分，每位同学得分都是整数，且至少有3人成绩一样，这个班至少有多少人？
<gadget id="calculator">98 - 72</gadget>
<output>26</output>

<gadget id="calculator">26 + 1</gadget>
<output>27</output>

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

<gadget id="calculator">54 + 1</gadget>
<output>55</output>

<result>55</result>