NEED HELP ASAP 20 MINUTES LEFT ON TIMER

Simplify:

28x^4 over 27 divided by 20 over 24x^3

(56/45)x^7

Step-by-step explanation:

28x^4            20

 ÷    becomes

    27          24x^3

28x^4         24x^3

 *     if we invert the divisor fraction and then multiply.    

    27            20

We get:           (28)(24)

                      x^7

                        (27)(20)

which reduces to (7)(24) x^7            (7)(8)x^7

                                 =      =  (56/45)x^7

                                 27(5)                  9(5)

other answer is correct. i had used the radius of the radius somehow. a website: