Comment The truth is in the middle (Score 1) 55
Your estimate is wrong. 7,202,335,148,562,342,439,363,104,735,232 units per month will be one month after 7.5 years. The correct number is 3601167574281171219681552367616 (feel free to insert the commas).
Considering the GP estimate of 1025 cars a week will result 53446 cars/year or 53592 (for a leap year) which translates into a monthly production rate between 4454 and 4466.
Considering the truth is in the middle I would calculate the monthly production of tesla to be between 1800583787140585609840776181581 and 1800583787140585609840776181575 cars/month.
Now back to my MBA course.