The fifth grade students collected 60 kilograms of tree species, and the sixth grade students collected the fifth grade (11/8). How many kilograms of tree species were collected by the two grades?
五年级同学采集树种60千克，六年级同学采集的是五年级的(11/8)，两个年级一共采集多少千克树种？
<gadget id="calculator">11 / 8</gadget>
<output>11/8 = around 1.375</output>

<gadget id="calculator">60 * (11/8)</gadget>
<output>165/2 = around 82.5</output>

<gadget id="calculator">60 + (165/2)</gadget>
<output>285/2 = around 142.5</output>

<result>285/2 = around 142.5</result>