16s^7 / (4t^5) x 6t^3

To simplify the expression, we can multiply the coefficients and combine the variables.

(16s^7 / (4t^5)) x 6t^3 = (16 x 6) (s^7 / 4) (t^3 / t^5)

= 96 (s^7 / 4) (1 / t^2)

= 96s^7 / 4t^2

= 24s^7 / t^2