10+650(y-5)/(860-5)+3.7((y-5)/(860-5))^2+(39-170(y-5)/(860-5)+134((y-5)/(860-5))^2)(x-1)/(388-1)+(3.3+32(y-5)/(860-5)-36((y-5)/(860-5))^2)((x-1)/(388-1))^2

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