Chapter 4 - Number Representation and Calculation - 4.1 Our Hindu-Arabic System and Early Positional Systems - Exercise Set 4.1 - Page 218: 21

(2x$10^{8}$) + (3x$10^{7}$) + (0x$10^{6}$) + (0x$10^{5}$) + (0x$10^{4}$) + (7x$10^{3}$ ) + (0x$10^{2}$) + (0x$10^{1}$) + (4x 1)

By using Hindu Arabic Numerals in expanded form 230,007,004 =(2x$10^{8}$) + (3x$10^{7}$) + (0x$10^{6}$) + (0x$10^{5}$) + (0x$10^{4}$) + (7x$10^{3}$ ) + (0x$10^{2}$) + (0x$10^{1}$) + (4x $10^{0}$) = (2x100000000) + (3x10000000) + (0 x1000000) + (0 x 100000) + (0x10000) + (7x1000) + (0x100) + (0x10 )+(4x1)