A plane travels an average of 780 kilometers per hour. It departs from Shanghai at 8:45 in the morning and arrives in Kunming at 11:45. How many kilometers is it from Shanghai to Kunming?
一架飞机平均每小时行780千米，上午8：45从上海出发，11：45到达昆明，从上海到昆明大约有多少千米？
<gadget id="calculator">780 * 3</gadget>
<output>2_340</output>

<result>2_340</result>