What is 999,765 to the nearest hundred thousand

Do u just plot the numbers on the graph like (1,

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Someone me what is the area of this figure? 18m 18m 8m 16m