The school will plant a batch of saplings. Assign this task to Grades 4, 5, and 6 to complete. Among them, the total number of trees in the sixth grade (1/3) is 12 more than the number of trees in the fifth grade (1/2), and the number of trees in the fourth grade is more than (1/3) of the total number of trees. 3) Less than 4 trees. How many saplings does the sixth grade get?
学校要栽一批树苗．把这项任务分配给四、五、六年级完成．其中，六年级分得总棵数的(1/3)还多12棵，比五年级分得的棵数多(1/2)，四年级分得的棵数比总棵数的(1/3)少4棵．六年级分得多少棵树苗？
<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">12 + 8</gadget>
<output>20</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">20 / (1/2)</gadget>
<output>40</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">40 * (3/2)</gadget>
<output>60</output>

<result>60</result>