A sample of Tl−201 has an initial decay rate of 5.80×104/s. How long will it take for the decay rate to fall to 58 /s ?, homework help

A sample of Tl−201 has an initial decay rate of 5.80×10⁴/s .

How long will it take for the decay rate to fall to 58 /s ? (Tl−201 has a half-life of 3.042 days.)

Express your answer using two significant figures.