Students in Class 5 and 3 expressed their holiday blessings to teachers on Teacher's Day. Among them, (1/3) students sent flowers, and the rest of the students sent homemade gifts. What percentage of the class are students who send homemade greeting cards?
五3班的同学在教师节都表达了对教师的节日祝福．其中，(1/3)的同学送了鲜花，其余的同学都送上了自制的礼物．送自制贺卡的同学占全班的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>