Krinkles Potato Chips Is Having a Lucky Seven Sweepstakes $70,000$ ; $7$

Krinkles potato chips is having a Lucky Seven Sweepstakes. The one grand prize is $ $70,000$ ; $7$ second prizes each pay $ $7,000$ ; $7$ third prizes each pay $ $700$ ; and $777$ fourth prizes each pay $ $70$ . What is the expectation of this contest (rounded to the nearest cent), if there are $8$ million entries? $ __________