[KanColle] Anti-Air Barrage Activation Rate (Weighted Anti-Air Value is Known)

This is a calculator for the activation rate of anti-aircraft rocket barrages in KanColle. It assumes that the weighted anti-aircraft value is known.
A calculator for cases where the weighted anti-aircraft value is unknown has already been created by someone else.
This calculator does not account for the Ise-class bonus or the multiple-equipment bonus. Please add +15% for each additional anti-aircraft gun equipped (or 25% for Ise-class ships).