There are 48 students in the sixth grade, equivalent to (2/3) of the fifth grade students. How many people are there in fifth and sixth grades?
六年级有学生48人，相当于五年级学生人数的(2/3)．五年级和六年级一共有多少人？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">48 / (2/3)</gadget>
<output>72</output>

<gadget id="calculator">72 + 48</gadget>
<output>120</output>

<result>120</result>