The least common multiple (LCM) of two numbers is 168 and highest common factor (HCF) of them is 12. If the difference between the numbers is 60, what is the sum of the numbers?

The least common multiple (LCM) of two numbers is 168 and highest common factor (HCF) of them is 12. If the difference between the numbers is 60, what is the sum of the numbers?