How do you write 1343239923 expanded notation?

1,343,239,923 = (1 x 1000000000) + (3 x 100000000) + (4 x 10000000) + (3 x 1000000) + (2 x 100000) + (3 x 10000) + (9 x 1000) + (9 x 100) + (2 x 10) + (3 x 1)