Xiao Ming plans to learn 76 words every day and finish it in 5 days. He learned 250 words in the first 3 days, and 80 words on the fourth day. How many words can he learn on the fifth day to complete the study plan?
小明计划每天学习76个单词，用5天学完．他前3天学习了250个，第四天学习了80个，第五天他学习多少个单词才能完成学习计划？
<gadget id="calculator">76 * 5</gadget>
<output>380</output>

<gadget id="calculator">250 + 80</gadget>
<output>330</output>

<gadget id="calculator">380 - 330</gadget>
<output>50</output>

<result>50</result>