4789
1
=
8
−
49
7
2
=
74
−
8
⋅
9
3
=
48
7
+
9
4
=
94
−
78
5
=
84
−
79
6
=
78
4
+
9
7
=
94
−
87
8
=
47
+
8
+
9
9
=
48
9
−
7
10
=
98
7
−
4
11
=
4
⋅
7
−
8
−
9
12
=
48
7
−
9
13
=
97
−
84
14
=
78
−
4
9
15
=
89
−
74
16
=
94
−
78
17
=
78
9
!
+
4
18
=
98
7
+
4
19
=
784
−
9
20
=
7
−
4
+
8
+
9
21
=
84
7
+
9
22
=
487
−
9
23
=
47
−
8
⋅
9
24
=
98
−
74
25
=
8
⋅
9
−
47
26
=
74
−
8
⋅
9
!
27
=
48
−
7
⋅
9
28
=
748
−
9
!
!
29
=
78
−
49
30
=
47
−
8
−
9
31
=
79
−
48
32
=
48
−
7
−
9
33
=
87
9
+
4
34
=
49
−
7
−
8
35
=
84
9
+
7
36
=
47
−
8
−
9
37
=
784
+
9
38
=
87
−
49
39
=
87
−
9
4
40
=
89
−
7
4
41
=
49
⋅
7
−
8
42
=
89
−
47
43
=
7
⋅
8
−
4
−
9
44
=
48
−
7
+
9
45
=
78
−
4
!
−
9
46
=
47
+
8
−
9
47
=
(
9
−
8
)
⋅
47
48
=
47
−
8
+
9
49
=
97
−
48
50
=
48
−
7
+
9
51
=
98
−
47
52
=
47
+
8
−
9
53
=
87
9
+
4
!
54
=
87
−
4
!
−
9
55
=
79
−
(
8
−
4
)
!
56
=
49
7
⋅
8
57
=
74
−
8
−
9
58
=
47
+
8
+
9
59
=
7
⋅
9
+
4
−
8
60
=
78
−
4
⋅
9
61
=
89
−
4
⋅
7
62
=
8
4
+
7
−
9
63
=
49
⋅
8
+
7
64
=
47
+
8
+
9
65
=
78
−
4
−
9
66
=
78
−
4
⋅
9
67
=
79
−
4
−
8
68
=
84
−
7
−
9
69
=
7
⋅
9
+
48
70
=
98
−
4
⋅
7
71
=
78
−
49
72
=
78
−
4
⋅
9
73
=
74
+
8
−
9
74
=
(
9
−
8
)
⋅
74
75
=
74
−
8
+
9
76
=
79
−
4
!
8
77
=
79
−
8
4
78
=
89
−
4
−
7
79
=
94
−
7
−
8
80
=
87
−
49
81
=
8
4
+
79
82
=
84
+
7
−
9
83
=
78
−
4
+
9
84
=
784
⋅
9
85
=
49
+
78
86
=
84
−
7
+
9
87
=
98
−
4
−
7
88
=
84
+
7
−
9
89
=
78
+
4
+
9
90
=
4
⋅
9
+
78
91
=
74
+
8
+
9
92
=
87
−
4
+
9
93
=
94
+
7
−
8
94
=
49
+
87
95
=
94
−
7
+
8
96
=
(
9
−
7
)
⋅
48
97
=
97
8
4
98
=
8
⋅
9
+
74
99
=
8
4
+
97
100
=
84
+
7
+
9