(5 + 8) * 4 = 52
1) 5 * 4 = 20
2) 8 * 4 = 32
3) 20 + 32 = 52
(3 + 7) * 8 = 80
1) 3 * 8 = 24
2) 7 * 8 = 56
3) 24 + 56 = 80
(9 + 2) * 7 = 77
1) 9 * 7 = 63
2) 2 * 7 = 14
3) 63 + 14 = 77
(4 + 6) * 3 = 30
1) 4 * 3 = 12
2) 6 * 3 = 18
3) 12 + 18 = 30
(5 + 8) * 4 = 52
1) 5 * 4 = 20
2) 8 * 4 = 32
3) 20 + 32 = 52
(3 + 7) * 8 = 80
1) 3 * 8 = 24
2) 7 * 8 = 56
3) 24 + 56 = 80
(9 + 2) * 7 = 77
1) 9 * 7 = 63
2) 2 * 7 = 14
3) 63 + 14 = 77
(4 + 6) * 3 = 30
1) 4 * 3 = 12
2) 6 * 3 = 18
3) 12 + 18 = 30