the answer is 480,000. Because both numbers have two zeros you can cancel out the zeros and add them later. So now you are left with 6×8. If you take six and add it to itself eight times, you get...
If you want just to multiply 800 x 800 then 640,000 square inches
You should have a calculator on your computer. Whats the point in going on wikianswers. You must be totaly dome.
800 X 1000y=76500 -800 -800 1000y=75700 Divide both sides by 1000y y=75.7
800 + 800 + 800 + 800 + 800 = 4,000