Why do I disagree with my calculator? I followed the order of opperations but my answer disagrees with my calulator's.

Problem: $331.91 - 1.03 - 19.90 + 150.00$
Calculator answer: $460.98$
My answer: $162.98$

Why the discrepancy?

"I follow the order of operation."
Addition (+) and subtraction (-) have the same priority; and should be evaluated from left to right.
Another responder noted you did the addition first, then the subtractions.
