The probability you want to hit an insert at least once. The calculator tells you how many packs you'd need.
Enter pack odds as printed. Supported formats: 1:4, 1 in 4, 1/4, or just 4.
Probability of hitting at least one of any listed inserts across your total packs.
Assumes independent trials and pack odds are uniform. Per-pack hit chances are treated independently across inserts.
