The store shipped 25 boxes of apples, 15 kilograms per box, and 4 yuan per kilogram. How much is the total cost?
商店运来苹果25箱，每箱15千克，每千克4元，一共要多少元？
<gadget id="calculator">15 * 4 * 25</gadget>
<output>1_500</output>

<result>1_500</result>