https://www.wix.com/code/home/forum/community-discussion/random-number-generator
https://webiya.wixsite.com/rnd-number-example
https://www.wix.com/code/home/forum/community-discussion/i-need-a-help-of-a-wix-expert
https://stackoverflow.com/questions/21816595/how-to-generate-a-random-number-of-fixed-length-using-javascript/21816636#21816636