For this gaseous reaction at 65°C:

2 A ⇌ 2 B + C

At 65°C, a reaction vessel initially contained 0.64 M A. If the value of K for this reaction at 65°C is 1.7 × 10-7, what concentration in M of C exists at equilibrium? Express your answer in scientific notation using the format 1.23e4 with no spaces where 1.23e4 = 1.23 × 104.