There are 540 students in the fifth grade, which is exactly (3/5) of the number of students in the sixth grade. How many students are there in total in the fifth and sixth grades?
五年级有学生540人，正好是六年级学生人数的(3/5)，五、六年级共有学生多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">540 / (3/5)</gadget>
<output>900</output>

<gadget id="calculator">900 + 540</gadget>
<output>1_440</output>

<result>1_440</result>