From the production data in the table below, calculate theVMP_Lfor the 2nd unit of labor.Assume the wage rate is $80 and the price of the firm's output is $5. (Give the numeric value only for your response; do not include commas, dollar signs, etc.)

Capital Labor Output (Q) 100 O O 100 - 20 100 2 44 100 3 66 100 4 84 100 5 96 100 104 100 98