I've worked with a programmer on a project who could not do basic algebra (4x + 1 = 5, solve for x), and would outsource any math to stackoverflow to get answer

I've worked with a programmer on a project who could not do basic algebra (4x + 1 = 5, solve for x), and would outsource any math to stackoverflow to get answers in his specific language. Those answers were usually incorrect because he didn't know how to phrase his questions correctly. That was horrifying to realize that the person writing the front end for an ecommerce application not only could not calculate tax, but would brag about how he doesn't need to know basic math.