Walk through the three-step Ecological Footprint calculation using the sample-exam numbers (A = 10,000 ha, YF = 2.4, EQF = 1.5 for biocapacity; EFp = 3.5, EFI = 1.5, EFE = 2.0 gha for consumption). Show your formulas, compute the deficit or surplus, and explain what each step measures.