I just can't solve this task, I could reach the equation can any one please help me assembling the equations ?

-It's known that if 6 employees of a huge factory are being checked then the probability that at the most 5 of them smoke is bigger in 0.764702 from the probability that all 6 employees smoke.

A- What is the probability that all 6 are smoking?

Final answer:0.117649

Can anyone please help me with this I have been trying to solve it desperately.