The bonus ball numbers is divided into 6 parts

Divide the bonus ball numbers (1-18) into 6 parts:

Part 1 range: 1 - 3

Part 2 range: 4 - 6

Part 3 range: 7 - 9

Part 4 range: 10 - 12

Part 5 range: 13 - 15

Part 6 range: 16 - 18