728,407 = (7 * 105) + (2 * 104) + (8 * 103) + (4 * 102) + (7 * 100)
728,407 = (7 * 100,000) + (2 * 10,000) + (8 * 1,000) + (4 * 100) + (7 * 1)
728,407 = 700,000 + 20,000 + 8,000 + 400 + 7
Expanded Form of 728,407
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