A Listeria bacterium swims through a watery medium in a straight line at a constant speed of 4.8 m/s. At some point, the bacterium releases a signaling chemical that diffuses through the medium. The diffusion constant of the chemical is 264 m²/s, and the diffusion is three-dimensional. How much time (in seconds) does it take the chemical to travel the distance that the bacterium travels in one minute (60 s)?