Easy
9
−1
×4
−5
÷9
+13
HALVE
+1
SQUARE
+19
Medium
59
−2
÷3
+1
÷4
+3
×3/4
DOUBLE
+6
÷9
Hard
66
HALVE
+3
×5/9
×7
×25%
+4
÷13
CUBE
−12
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