I'm currently working on calculating my GWA (General Weighted Average), and I'm a bit stuck on some aspects. I've been using the standard formula, but there are nuances I'm not entirely clear on https://gwacalculator.ph/. Specifically, how do you account for weighted courses? Do you simply multiply the grade by the weight and then sum them up? Also, what about courses taken multiple times? Do you include all attempts or just the latest one?

I'd appreciate any insights or clarifications on these points. It's crucial for ensuring accuracy in academic evaluations. Thanks in advance for your help!