There are 6 elephants in the zoo, and each elephant eats 15 kilograms of bananas every day. How many kilograms of bananas do these elephants eat in a week?
动物园里有6头大象，每天每头大象要吃15千克香蕉，这些大象一个星期要吃多少千克香蕉？
<gadget id="calculator">15 * 6 * 7</gadget>
<output>630</output>

<result>630</result>