There are 7 Chinese companies, 4 American companies, and 2 French companies participating in international conferences to discuss trade. Both of them hope to have a separate negotiation with each company in a foreign country. How many meetings should be arranged?
有7家中国公司，4家美国公司，2家法国公司参加国际会议洽谈贸易，彼此都希望与异国的每家公司单独洽谈一次，要安排多少次会谈场次．
<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">28 + 14 + 8</gadget>
<output>50</output>

<result>50</result>