It is a bit confusing on why you said 40,0000 with four zeros
But based my assumptions with calculations, here are my answers:
40,0000 with five zeros or 400,000÷60=6666.67
40,000 with four zeros=666.67
The correct use of the introductory comma in the sentence is a clause.
True! By using standard speech, the majority of your audience would be able to understand it.
I loved it, it was an amazing speech
