User talk:113.199.239.15

October 2021
Hello, I'm Nick Levine. An edit that you recently made to Positional notation seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! Nick Levine (talk) 05:26, 5 October 2021 (UTC)