Need help in a project

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I am trying to create a project based on ERC20 tokens. In each of the token, I would like to track the the value of 5 different cryptocurrencies using Chainlink price feed, and each individual token will have a different valuation because the quantity of cryptocurrencies would differ.

I am unable to understand the smart contract design for this.

Would I need to create a base ERC20 token with some additional properties to hold valuation of the token, and will each of the token be created using an ERC20Factory?

I wanna achieve this using frontend as well, finding it to be challenging... any guidance would be of great help! Thank you!