Please take a look at this total importance calculation displayed by the game:
https://drive.google.com/file/d/1ChJ5TNEqUzx-KYezFt5-Ms_3fYMbqRE0/view?usp=sharing
Adding parenthesis around a multiplication seems redundant, then adding a fraction of a unit to the significantly large product feels irrelevant.
Do you actually intend to calculate priority this way, or maybe the other way around, adding the base values then multiplying by a weight factor?