There are 250 students in the fourth grade of the experimental primary school, which is less than the fifth grade (1/6). How many people are there in the fifth grade?
实验小学四年级有250人，比五年级的人数少(1/6)，五年级有多少人？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">250 / (5/6)</gadget>
<output>300</output>

<result>300</result>