What is the sum of 1387 and 5678?

How much is 9 feet in ayard? What three digit numbers are divisible by nine? What is the largest one-digit natural number? What is 20 percent off of 27? What number represents the Roman Numeral LXX? How can you make a sentence with the word avenue? What is the result of two displacment vectors having opposite directions? How many hours is 3000 miles equivalent to? What is the percentage of 2.9? What is a shape with a 90 degree angle called? How many productive hours a person can do in one day? 4 times the sum of q and p? 100 yards equal how many miles and feet? Is thirteen twentieths bigger that eleven seventeenths? What is the highest prime factor of 210? What is an arithmetic function? 2.5 in equals cm? How many feet is 90cm plus 7inches plus 8cm equals? What equals 102 in the multiplication table? What does 440 divided by 3 equal?