idnr: 528
30*
3
18+
4/
3/
5
2/
4*
12+
7+
Difficulty: Medium ()
idnr: 2120
7+
4+
6+
3
7+
7+
6+
7+
7+
11+
5+
5+
Difficulty: Easy ()
idnr: 2758
14+
6*
9+
8*
1-
5/
180*
9+
7+
Difficulty: Medium ()
idnr: 2257
10+
12*
400*
9+
8+
30*
1-
5/
Difficulty: Medium ()