Festive formula

It must be Christmas again in Japan. November is barely done and already the Colonel Sanders triplets (remember them?) have their red rags on. How is it that a Buddhist/shintoist country gets so excited about Christmas? Welcome to globalisation 1.01. One of the strangest sights I recall the first year I was in Tokyo, a good decade ago, was seeing lines stretching round the corner for KFC on Christmas Eve. Why? Allow me to explain mathematically:

x= (c-t)+ch*130,000,000@KFC=¥¥¥¥¥¥¥¥¥¥!!!!!!!!!!

(where x= Festive fun, c=Christmas, t=Turkey, ch= Chicken)