Remove characters not desired in a field

bea11005 · 2018-01-27T11:34:53+00:00

Hello. I need to get from a Text Fiel in a table a number inside. The field contains that: {"op":"&","c":[{"type":"date","d":">=","t":1480582800},{"type":"group"}],"showc":[true,true]} I need only the number. I can't remove {} [] characters, I've been using Replace operator to remove the other characters. How can I do to…