So my son is a senior in college and in Industrial engineering. He had all this math plus higher end Calc Stats etc etc plus learning many different programming languages. He was on an internship and had to calculate things for evaluate for cost savings measures and which product would be the best value (might be off on reality but go with the example)…
So I asked him with all his math classes he had and even with multivariate Calc he had in high school, what did he use on the job. He answered Excel! I found this soo funny. But after talking to many more engineers this seemed the norm… Besides maybe some modeling software and an occasional sql. Excel seems to be used alot… 
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