Pull Some Numbers From Text

My Cells contain loads of text like this: ["16733:0:0"] = “Product ID”:1:1:0", now what i need is just the 16733 to be extracted into its own cell, and the Product ID to be extracted into the cell next to it... all other Text can be deleted. The problem is, pretty much the whole of the text changes in each line :-

["12345:0:0"] = “Product ID1”:1:1:0",
["49573:0:0"] = “Product ID23”:4:8:0",
["2649:0:0"] = “Product ID485”:18:23:0",
["9264:0:0"] = “Product ID0473”:2842:2341:0",
["54321:0:0"] = “Product ID85647”:99:199:0",

In the Numbered part of it (the bit I actually need), it would be either 4 or 5 digits long. Im guessing what I need to do is remove parts bit by bit, but for a novice user - Its proving a bit difficult!