A firm has a three divisions, Division 1, Division 2, and Division 3. Divisions 1 and 2 represent 20% and 32% of the firm's value, respectively. The firm's WACC is 8.1%, Division 1's WACC is 9.4%, and Division 2's WACC is 6.2%. Neither the divisions, nor the firm as a whole have any debt or preferred stock (i.e.: their capital structures are pure equity). If the risk free rate is 2.1%, and the Market Risk Premium is 5.4%, what is the WACC of Division 3?

Enter your answer as a percentage, without the percent '%' sign, and rounded to 1 decimal.