The supermarket bought 5 new boxes of apples, each weighing 25 kilograms, and 4 yuan per kilogram. How much is the total cost?
超市新进5箱苹果，每箱重25千克，每千克4元，一共用了多少元．
<gadget id="calculator">25 * 5 * 4</gadget>
<output>500</output>

<result>500</result>