how to calculate?

The Occupational Safety and Health Administration (OSHA) has determined that the probability of a worker dying from exposure to a hazardous chemical used in the production of diet soft drinks is 0.0005. The cost of imposing a regulation that would ban this chemical is $18 million. If each person saved has a value equal to $10 million, how many people must the policy affect for benefits to exceed costs?

a. 301

b. 601

c. 1801