Half of 318 is <<318/2=159>>159

159 + 18 = <<159+18=177>>177 stairs

318 + 177 = <<318+177=495>>495

Together they climbed 495 stairs yesterday.

# Answer

495
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Samir climbed 318 stairs yesterday. Veronica climbed 18 more than half that amount. How many stairs did Veronica and Samir climb together yesterday?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
495
Samir climbed 318 stairs yesterday. Veronica climbed 18 more than half that amount. How many stairs did Veronica and Samir climb together yesterday?
train