There are 146 boys and 99 girls in the fourth grade of Zhoulin School. The number of students in the fourth grade is 7/8 of the number of students in the sixth grade. How many students are there in the sixth grade?
周林学校四年级有男生146人，女生99人，四年级学生人数是六年级学生人数的(7/8)，六年级有学生多少人？
<gadget id="calculator">146 + 99</gadget>
<output>245</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">245 / (7/8)</gadget>
<output>280</output>

<result>280</result>