| 1234567891011121314151617181920 | 
							
- ========================
 
- Expression: 1
 
- Object is a number : 1
 
- ========================
 
- Expression: 1+2
 
- Object is a number : 3
 
- ========================
 
- Expression: 2*3
 
- Object is a number : 6
 
- ========================
 
- Expression: 1+2*3+4
 
- Object is a number : 11
 
- ========================
 
- Expression: (1+2)*(3+4)
 
- Object is a number : 21
 
 
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