Answer
19.193
Work Step by Step
We are given that Uranus is 1783 million miles from the sun. We are also told that AU is the average distance between Earth and the sun, or 92.9 million miles. Therefore, we can divide Uranus' distance from the sun by 92.9 million miles in order to calculate Uranus' AU from the sun.
$\frac{1783}{92.9}=19.193$