In a bar chart showing the number of students in a certain school, the vertical axis "5 grids" means that there are 250 students in the first grade, so there are 300 students in the fifth grade, how many grids should be used on the vertical axis.
在一幅表示某学校学生人数的条形统计图中，纵轴"5格"表示一年级有250人，那么五年级有300人，在纵轴上应该用多少格表示．
<gadget id="calculator">250 / 5</gadget>
<output>50</output>

<gadget id="calculator">300 / 50</gadget>
<output>6</output>

<result>6</result>