A pig weighs 220 kg, and a buffalo weighs 52 kg twice as much as a pig. How much does a buffalo weigh?
一头猪重220千克，一头水牛比一头猪的2倍还多52千克，一头水牛重多少千克？
<gadget id="calculator">220 * 2</gadget>
<output>440</output>

<gadget id="calculator">440 + 52</gadget>
<output>492</output>

<result>492</result>