I want to make 64 using my calculator, but the 6 key and the 4 key are broken. How can I use my calculator to do this task?

Question

How do I make 64? Without a 6 key and 4 key working on the calculato.

Answer 1

Find 2 numbers that add up to 64 but do not have 6 or 4 in their digits, and add them on the calculator to get 64.

 

Examples:

 

59 + 5 = 64

 

71 - 7 = 64

 

33 + 31 = 64

 

etc.