What is 800 000 000 000 in standard form?
Find out how many times you need to divide by 10 to get the remaining digit to between 1 and <10.
Then put you answer in here:
(final digit)*10^(number of times needed to divide by 10 to get a digit on its own 1<= and <10)
8*10^11.
8.00000000000*10^11