I have Russian/English stickers on top of the keyboard, which in the Russian layout works for almost every key I have tried, but not the "?" and "/" key, which in the Russian layout should be "." and ",". As a result, I do not know (apart from switching to the U.S. keyboard to enter an appropriate keystroke) how to give a "," or "."
How, from the Russian keyboard, can/should I enter a "," or "."?