Answer
Total selling price: $10,000 \times 2,000 = 20,000,000$
(Less)Earned: $18/40 \times 20,000,000 = (9,000,000)$
Unearned revenue (Current Liability) = $11,000,000$
Work Step by Step
The remaining $11,000,000 should be reported as unearned revenue on December 31, 2012.