Reaction of phenol with NaOH followed by heating with CO₂ under high pressure, and subsequent acidification gives compounds X as the major product, which can be purified by steam distillation. When reacted with acetic anhydride in the presence of a trace amount of conc. H₂SO₄ compound X produces Y as the major product. If molecular mass of the final product (Y) is M then report your answer as M/10. (Atomic masses of C=12, H=1, O=16)