怎么直接运用上面的结果来运算下面

已经能求出salary，怎么直接运用上面的结果，下面这个要怎么算呢？要加什么代码呢？

hours = int(input("Work hours:"))
pay = int(input("Paty rate:"))
rate = int(input("tax rate:"))
Salary = hours*pay
Salary_rate = Salary*rate
print("Pay rate:{}".format(pay))
print("Salary:{}".format(Salary))
print("Deductions:{:.2f}".format(Salary_rate))

hours = int(input())
pay = int(input())
rate = float(input())
salary = hours*pay
print('Pay rate:{}'.format(pay))
print('Salary:{}'.format(salary))
print('Deduction：{:.2f}'.format(salary*rate))