Aunt Li raised two pigs. The sow weighs 267 kg, which is 16 kg heavier than the boar. How much does the two pigs weigh together?
李大婶养了两头猪，母猪重267千克，比公猪重16千克，两头猪共重多少千克
<gadget id="calculator">267 - 16</gadget>
<output>251</output>

<gadget id="calculator">251 + 267</gadget>
<output>518</output>

<result>518</result>