Canteens A, B, and C slaughtered 7 pigs of the same weight. Canteen A took out 4 pigs, Canteen B took out 3 pigs, and Canteen C took no pigs. After the slaughter, the three canteens shared the meat of the seven pigs equally, and Bing canteen paid 840 yuan for it. How much more should A cafeteria be than B cafeteria?
甲、乙、丙三个食堂宰了7头一样重的猪，甲食堂拿出4头猪，乙食堂那出3头猪，丙食堂没有拿猪．宰后三个食堂平分了这7头猪的肉，丙食堂为此付出840元钱．甲食堂应比乙食堂多得几元？
<gadget id="calculator">7 / 3</gadget>
<output>7/3 = around 2.333333</output>

<gadget id="calculator">840 / (7/3)</gadget>
<output>360</output>

<result>360</result>