A shipper offers a spot rate of $2.10/mile for a 650-mile dry van load. The carrier's all-in cost (fuel, driver pay, overhead, deadhead) is $1.78/mile. The load requires 2 hours of detention at origin. At $50/hour detention after the first free hour, what is the minimum acceptable all-in rate per mile the dispatcher should negotiate to preserve a 12% net margin?

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