Wege in den Beruf: German For Your Career is a massive open online course (MOOC) for teaching business German to students at the secondary and post-secondary levels of education. There is no cost for students wishing to participate in the course, and German language instructors are free to modify and deploy the instruction and course materials in a manner they see fit.
Enroll here: https://canvas.instructure.com/enroll/698BPK
This HD subtitled video teaches you how to pronounce the German numbers zero through five hundred; how to form select German numbers so that you can form others numbers that are similar; and how to apply German numbers in order to complete addresses, postal or ZIP codes, and telephone numbers.
Business German Program at Elon University: