The fifth grade planted 330 trees, the sixth grade planted 20% more trees than the fifth grade, how many fewer trees were planted in the fifth grade than the sixth grade?
五年级植树330棵，六年级植树的棵数比五年级多20%，五年级比六年级少植树多少棵？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">330 * (1/5)</gadget>
<output>66</output>

<result>66</result>