Sixth grade students planted trees, Class 6 1 planted 1/6 of the total, and Class 6 2 planted 120 trees. The ratio of the trees planted by Class 6 and Class 1 is 3:2. How many trees were planted by the sixth graders?
六年级同学栽树，六1班栽了总数的(1/6)，六2班栽了120棵．与六1班栽的棵树比为3：2，六年级同学一共栽树多少棵？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(2/3) / (1/6)</gadget>
<output>4</output>

<gadget id="calculator">120 * 4</gadget>
<output>480</output>

<result>480</result>