The Divide into 5 portions of sum of the 1st and 2nd digits

The sum of the 1st digit and the 2nd digit of the lucky draw number is divided into 5 divisions

Part 1: 1 - 16

Part 2: 17 - 32

Part 3: 33 - 48

Part 4: 49 - 64

Part 5: 65 - 79