There are 65 fifth-grade students and 55 fourth-grade students in a certain school, and the number of sixth-grade students is exactly the sum of the number of fourth-grade and fifth-grade students (1/2). How many sixth-grade students are there in this school?
某校五年级学生65人，四年级学生55人，六年级人数正好是四年级和五年级人数总和的(1/2)，这个学校六年级有学生多少人？
<gadget id="calculator">65 + 45</gadget>
<output>110</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">110 * (1/2)</gadget>
<output>55</output>

<result>55</result>