Teacher Li led five groups of students to pick cotton. Teacher Li picked 18 kilograms, and each group picked 27 kilograms on average. How many kilograms did the teachers and students pick in total?
李老师带领5个小组的同学去摘棉花．李老师摘了18千克，平均每个小组摘了27千克．师生一共摘了多少千克？
<gadget id="calculator">27 * 5</gadget>
<output>135</output>

<gadget id="calculator">135 + 18</gadget>
<output>153</output>

<result>153</result>