Three students plant trees on Arbor Day. The number of trees planted by the first student is (1/2) of the total number of trees planted by other students, and the number of trees planted by the second student is (1/2) of the total number of trees planted by other students. /4), the first classmate and the second classmate planted 80 trees in total. How many trees did the three students plant in total?
植树节时三位同学去种树，第一位同学种树的棵数是其他同学种树总数的(1/2)，第二位同学种树的棵数是其他同学种树总数的(1/4)，第一位同学和第二位同学共种了80棵．三位同学一共种了多少棵树？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) + (1/5)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">80 / (8/15)</gadget>
<output>150</output>

<result>150</result>