I also learned the line with a dot above and below in my country, the USA. But that was a very long time ago, math teaching has changed immeasurably since my t

I also learned the line with a dot above and below in my country, the USA. But that was a very long time ago, math teaching has changed immeasurably since my time. In Unicode it's U+00F7: https://www.compart.com/en/unicode/U+00F7 https://www.compart.com/en/unicode/U+00F7