An orangutan eats 15 kilograms of food every day. There are 8 orangutans in the zoo. How many kilograms of food do they eat in a week?
猩猩每天要吃15千克的食物，动物园里有8只猩猩，一个星期要吃多少千克的食物？
<gadget id="calculator">15 * 8 * 7</gadget>
<output>840</output>

<result>840</result>