It's transfered from a database, Megabytes level,
any editor can deal with that?

the typical formats are
1) 1-416-512*187-0-999--->should be (1)416-5121780ext999
2) 44-321-1&85-888---->should be (44)321-185ext888
3) 1-416-6658790-8879--->should be (1)416-6658790ext8879

all non-nummeric characters in the middle should removed