If I have 42 tera mining power hashes, how long will it take me to extract a single block, and if I join a mining group, how much bitcoin will I get?

If I have 42 tera mining power hashes, how long will it take me to extract a single block, and if I join a mining group, how much bitcoin will I get? I am interested in buying 4 Bitmain Antminer T9 +.