Divide the 1st digit of the lottery numbers (1-55) into 9 parts:
No.1 range: 1 - 7
No.2 range: 8 - 13
No.3 range: 14 - 19
No.4 range: 20 - 25
No.5 range: 26 - 31
No.6 range: 32 - 37
No.7 range: 38 - 43
No.8 range: 44 - 49
No.9 range: 50 - 55