A cow weighs about 425 kilograms, and an adult elephant is equivalent to the mass of 13 cows. How many kilograms does an adult elephant weigh?
一头牛大约重425千克，一头成年大象相当于13头牛的质量，一头成年大象大约重多少千克？
<gadget id="calculator">425 * 13</gadget>
<output>5_525</output>

<result>5_525</result>