In this task, you are given a simple math problem involving basic arithmetic operations. Your task is to solve the problem and provide the correct numerical answer. Do not include any additional explanation or text, just provide the answer as a number.
What is 15 + 28?
43
Input: [INPUT]  
Alternative formulation: Solve the given math problem and return the answer as a number only.
Input: What is 15 + 28?  
Alternative formulation: Solve the given math problem and return the answer as a number only.
human
Input: What is 15 + 28?  
Alternative formulation: Solve the given math problem and return the answer as a number only.
gpt
43