Prizes and the chances of winning in a sweepstakes are given in the table below.
| Prize | Chances |
| $10,000,000 | 1 chance in 300,000,000 |
| $150,000 | 1 chance in 200,000,000 |
| $75,000 | 1 chance in 50,000,000 |
| $5,000 | 1 chance in 4,000,000 |
| $500 | 1 chance in 600,000 |
| A watch valued at $65 | 1 chance in 8,000 |
(a) Find the expected value (in dollars) of the amount won by one entry.
(b) Find the expected value (in dollars) if the cost of entering this sweepstakes is the cost of a postage stamp (34 cents)
You can earn partial credit on this problem.