On Friday they sold 210 × 2 = <<210*2=420>>420kg.
On Sunday they sold 130 ÷ 2 = <<130/2=65>>65kg.
They sold a total of 210 + 420 + 130 + 65 = <<210+420+130+65=825>>825kg of meat.
Meat Market sold an extra 825 - 500 = <<825-500=325>>325kg of meat beyond their original 500kg plans.
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