The Embroidery Museum received 5 batches of guests this morning, with an average of 103 people in each batch; another 804 visitors came in the afternoon. How many fewer people visited this morning than in the afternoon?
刺绣博物馆今天上午接待了5批客人，平均每批103人；下午又来了804名参观者，今天上午参观人数比下午少多少人？
<gadget id="calculator">103 * 5</gadget>
<output>515</output>

<gadget id="calculator">804 - 515</gadget>
<output>289</output>

<result>289</result>