There are more than 50 people in a class in physical education class. They stand in a row. The teacher asks them to count according to 1, 2, 3, 4, 5, 6, 7. The last person reported is 4. How many people are in this class? physical education.
某班有50多人上体育课，他们站成一排，老师让他们按1，2，3，4，5，6，7循环报数，最后一人报的数是4，这个班有多少人上体育课．
<gadget id="calculator">49 + 4</gadget>
<output>53</output>

<result>53</result>