There are 260 students in grade five and grade six. The ratio of the number of students in grade five to the number of grade six is 7:6. How many students are there in grade six?
五年级和六年级共有学生260人，五年级学生人数与六年级人数的比为7：6，六年级有多少学生？
<gadget id="calculator">7 + 6</gadget>
<output>13</output>

<gadget id="calculator">6 / 13</gadget>
<output>6/13 = around 0.461538</output>

<gadget id="calculator">260 * (6/13)</gadget>
<output>120</output>

<result>120</result>