The tigers on the Tiger Mountain in the zoo eat 85 kilograms of beef every day. How much beef will be used to feed the tigers throughout May (31 days)?
动物园虎山上的老虎每天要吃85千克牛肉，整个五月(31天)饲养老虎要用去多少牛肉？
<gadget id="calculator">85 * 31</gadget>
<output>2_635</output>

<result>2_635</result>