Answer:
The answer is 20812
The numeral system we use is a base ten numeral system. Base ten numeral numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The number has:
2 "tens thousands" = 2 * 10000 = 20000
0 "thousands" = 0
8 "hundreds " = 8 * 100 = 800
1 "tens" = 1 * 10 = 10
2 "ones" = 2 * 1 = 2
Sum all the results => 20000+800+10+2 = 20812
That is how you write a number using base ten numerals (numbers from 0 to 9)