8
1234 + 4567
1234 + 4567 X 11
12 X 34 + 56 X 78 + 90
12345 + 56789 X 34567 - 87654
12 - 34 X 56 X 78
1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9
12 - 23 X 34 X 45 X 56 + 67 X 78 X 89 - 90
476 X 983 + 906 X 9182 - 2735 X 125