The workers picked 300 boxes of apples on the first day, and each box weighed 25 kilograms. The number of apples picked on the second day was the same as that on the first day. How many kilograms of apples were picked in two days?
工人第一天摘苹果300箱，每箱重25千克，第二天摘的苹果和第一天同样多，两天共摘苹果多少千克？
<gadget id="calculator">25 * 300 * 2</gadget>
<output>15_000</output>

<result>15_000</result>