Vlookup with wild-card and multiple lookup values

Hello,

I'm trying to find a formula that will solve the attached. I would like to use a 2-digit number as a look-up value to find matching number+letter codes, and then add the corresponding column amounts together. I'm using a wildcard because the look-up value will only contain the 2-digit number. So far I cannot get this to work using VLookup since it only looks at the first value, but I'm not sure how to move past this.

Does anyone have any ideas on how this could work?

Thanks,
Jason