If C (in units of 10⁻⁴ molar) is the concentration of glucose in a solution, then E. coli bacteria in the solution grow at a rate, R (in cell divisions per hour), given by R=1.35C/(0.22+C) cell divisions per hour.

Find the growth rate of bacteria growing in 3⋅10⁻⁴ molar glucose solution. Include units. Round your answer to four decimal places. The growth rate is __?