HMMT November 2022 U10

A real number $x$ is chosen uniformly at random from the interval [0,1000]. Find the probability that

$$\left\lfloor\frac{\left\lfloor\frac{x}{2.5}\right\rfloor}{2.5}\right\rfloor=\left\lfloor\frac{x}{6.25}\right\rfloor .$$