Excel Converting a text entered sum into value with multiple entry criteria

Hi Experts

Hope you can help

We ahve packing lists sent from our suppliers to check for carton compliance; data that is entered into Column H on the atatached example. This entry is normally entered as dimensions LxWxH and, for example, looks either as 50*30*20 or 50x30x20

In order to check conformity, I would like to put a formula in Column K to sum the carton dimesions entry however it is normally in text and as you can see above, either separated by a * or an x

Ive tried using VALUE and ISNUMBER with a combination of extracting the values to sum the entries (that I will then look up to the correct available sizes) but to now, I cannot find a suitable solution

I have attached an example

Any help would be greatly appreciated

J
EE_Example.xlsx