I DON'T UNDERSTAND How many days will it take to get 1.5 million dollars?

On your first day of work, you get $1. On your second day of work, you get $4. On your third day of work, you get $9. On your fourth day of work, you get $16. It continues this way for 30 days and then once you’ve completed the 30-day trial you receive a completion bonus of $500,000.