4777
1
=
47
7
−
7
2
=
7
⋅
7
−
47
3
=
77
−
74
4
=
7
−
(
4
−
7
7
)
5
=
74
−
7
⋅
7
6
=
(
77
−
74
)
!
7
=
77
7
−
4
8
=
4
7
−
7
+
7
9
=
77
7
−
4
10
=
4
−
7
7
+
7
11
=
7
−
(
7
−
4
)
+
7
12
=
7
7
+
4
+
7
13
=
77
7
+
4
14
=
(
7
−
4
)
⋅
7
−
7
15
=
77
7
+
4
16
=
74
+
7
+
7
17
=
7
−
4
+
7
+
7
18
=
7
⋅
7
+
4
+
7
19
=
7
−
4
+
7
+
7
20
=
(
7
−
4
)
!
+
7
+
7
21
=
77
+
7
4
22
=
477
+
7
23
=
4
+
7
+
7
+
7
24
=
(
7
−
7
7
)
⋅
4
25
=
74
−
7
⋅
7
26
=
7
+
7
7
+
4
!
27
=
4
⋅
7
−
7
7
28
=
77
−
7
4
29
=
4
⋅
7
+
7
7
30
=
77
−
47
31
=
(
7
−
(
7
−
4
)
)
!
+
7
32
=
(
7
7
+
7
)
⋅
4
33
=
47
−
7
−
7
34
=
?
35
=
77
7
+
4
!
36
=
(
7
−
7
7
)
4
37
=
7
!
4
!
⋅
7
+
7
38
=
7
⋅
7
−
4
−
7
39
=
?
40
=
47
−
7
⋅
7
41
=
7
4
−
7
!
7
42
=
77
+
7
4
43
=
(
7
−
4
)
!
−
77
44
=
77
⋅
4
7
45
=
4
!
+
7
+
7
+
7
46
=
47
−
7
7
47
=
47
−
7
+
7
48
=
7
7
+
47
49
=
77
−
4
⋅
7
50
=
7
4
+
7
7
51
=
4
7
−
77
52
=
7
⋅
7
−
4
+
7
53
=
7
⋅
7
⋅
7
+
4
54
=
7
⋅
7
+
47
55
=
(
7
−
4
)
!
+
7
⋅
7
56
=
(
4
+
7
)
⋅
7
−
7
57
=
?
58
=
7
⋅
7
+
4
+
7
59
=
?
60
=
74
−
7
−
7
61
=
47
+
7
+
7
62
=
?
63
=
74
+
7
⋅
7
64
=
4
7
−
7
7
65
=
(
4
+
7
)
!
7
!
−
7
66
=
77
−
4
−
7
67
=
74
−
7
⋅
7
68
=
77
−
4
−
7
69
=
7
7
+
7
!
−
4
70
=
(
7
−
4
+
7
)
⋅
7
71
=
77
−
(
7
−
4
)
!
72
=
77
+
4
−
7
73
=
74
−
7
7
74
=
74
−
7
+
7
75
=
7
7
+
74
76
=
?
77
=
4
⋅
7
+
7
⋅
7
78
=
?
79
=
4
7
−
7
⋅
7
80
=
77
−
4
+
7
81
=
7
⋅
7
+
74
82
=
77
−
4
+
7
83
=
(
7
−
4
)
!
+
77
84
=
(
4
+
7
)
⋅
7
+
7
85
=
?
86
=
77
+
4
+
7
87
=
?
88
=
74
+
7
+
7
89
=
?
90
=
7
!
(
7
+
7
)
⋅
4
91
=
4
⋅
7
+
77
92
=
?
93
=
?
94
=
77
+
4
!
−
7
95
=
7
7
+
7
!
+
4
!
96
=
7
⋅
7
+
47
97
=
?
98
=
4
⋅
7
⋅
7
⋅
7
99
=
?
100
=
(
7
+
7
)
⋅
7
+
4