Creating Multiple Records from Screen Input in Flow

Hi everyone- head-scratcher here that I didn't find much about online.  Wondering if this is so basic that no one asks, or unusual, or solved in some other way than I"m proposing?

I am trying to figure out how exactly to create multiple records (up to the user how many, though usually 10 of less), based on data users enter.  They don't need to stop to match records, and they only need to enter one value to create each record.  It would be launched via quick action from one record, and the Flow would match values to an existing object, and create one record in a junction object for every number entered.  

I have a feeling it could be done using Fast Create, but I could use a model to understand the structure. I did find this one post from 2014, but was wondering if there is some newer functionality.  https://salesforce.stackexchange.com/questions/48554/multiple-child-record-creation-in-flow 

Also wondering if there is a way I could just have users enter all numbers into one field (comma separated for example), and have the Flow automatically use that data to create one junction record for every number.