실행결과
20
100
<__main__.CalDivide object at 0x000000000316CDA0> 30
<
__main__.CalDivide
object at 0x000000000316CDA0> 30
<__main__.CalDivide object at 0x000000000316CDA0> 200
object at 0x000000000316CDA0> 200
<__main__.CalDivide object at 0x000000000316CDA0> 2.0
object at 0x000000000316CDA0> 2.0