Idon't know how to solve 5/9 ÷ -3/8 i think it's -40/27 but i didn't solve it though

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9