The answer would be 3520.
If there is 1 yard in 3 feet, then if we divide the number of feet in a mile by 3, then we should get how many yards are in a mile.
3520 / 3 = 1760
That is only the number of yards in one mile though, and the question asks for two miles. To find this, we simply multiply the answer we got in the first step by two.
1760 x 2 = 3520 yards