A machine that lasts for $8$ years costs $$1,900,000$ to purchase today and $$65,000$ to operate each year. What is the equivalent annual cost, including tax effects? Assume a discount rate of $10\%$ and a tax rate of $21\%.$

a$)$ $$340,500$

b$)$ $$331,016$

c$)$ $$347,600$

d$)$ $$306,350$