X company and Y company enter into merger agreement and make the following announcement.

-X company will acquire 100% of the equity of Y company in an all atock purchase.

-the purchase consideration is valued at $5B based in the pre announcemwnt atock purcgase of Company X ath $50 a share. The announced purchase consideration is a 25% premium dor the C company equity.

-X company will also assume the entire pre merger debt of $1B of Y company. X company also has $2B of its own pre merger debt.

-After the merger, original X company stockholders will be hold 66.67% of the equity in NewCo equity and the original Y companystockholders will own 33.33% equity stake in NewCo.

-Prior to the merger there are 200M X company shares and there are 200M Y company shares.

-Sinergy generated in the merger = $3B.

what is the exchange ratio expressed aa the number od shares of NewCo given for each Y company share?