Class 5 students are divided into groups to participate in team activities. If there are 6 students in each group, there will be 4 more students, and if there are 7 students in each group, 5 students will be added. How many students should there be in a class of 5th grade at least?
五年级一班同学分组参加班队活动，如果每组6人则多4人，如果每组7人则多5人，五年级一班至少有多少位同学？
<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">7 - 6</gadget>
<output>1</output>

<gadget id="calculator">6 / 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">36 + 4</gadget>
<output>40</output>

<result>40</result>