class Calculator:
@staticmethod
def add(a, b):
return a + b
@staticmethod
def sub(a, b):
return a - b
@staticmethod
def mul(a, b):
return a * b
@staticmethod
def div(a, b):
return a / b
x = 10
y = 3
print(Calculator.add(x,y))
print(Calculator.div(x,y))
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