4 x 2 = 8
9 + 75 = 84
10 x 84 = 840
8 x 75 = 600
840 x 600 = 504000

75 - 2 = 73
10 + 9 = 19
19 + 73 = 92
4 + 92 = 96
75 x 96 = 7200

10 - 4 = 6
9 x 2 = 18
18 x 75 = 1350
1350 + 75 = 1425
6 + 1425 = 1431

10 / 2 = 5
75 + 9 = 84
75 + 4 = 79
84 x 5 = 420
79 x 420 = 33180

2 + 75 = 77
75 + 77 = 152
9 + 10 = 19
4 + 19 = 23
23 x 152 = 3496

75 - 10 = 65
2 + 4 = 6
6 x 9 = 54
54 + 75 = 129
129 x 65 = 8385

75 - 10 = 65
65 + 4 = 69
75 x 2 = 150
9 x 150 = 1350
69 x 1350 = 93150

2 + 4 = 6
75 x 6 = 450
10 - 9 = 1
75 x 450 = 33750
1 + 33750 = 33751

75 x 9 = 675
10 x 75 = 750
4 + 2 = 6
6 x 675 = 4050
750 x 4050 = 3037500

2 + 75 = 77
75 + 9 = 84
77 x 4 = 308
10 x 84 = 840
840 x 308 = 258720

9 - 2 = 7
4 + 75 = 79
7 + 10 = 17
75 + 17 = 92
79 x 92 = 7268

75 + 4 = 79
9 + 10 = 19
2 x 75 = 150
19 + 150 = 169
169 + 79 = 248