we are given

Since, we have to find our value in miles
so, we need to change everything in terms of miles
and then we can combine them
so, we will have to change 3520 yards into miles
we know that

or we can also write it as

now, we can find for 1 yard
so, we can divide both sides by 1760


now, we can find for 3520 yards
so, we can multiply both sides by 3520


now, we can replace it in our expression

now, we can simplify it



.................Answer