640.32 = (6 * 102) + (4 * 101) + (3 * 1/101) + (2 * 1/102)
640.32 = (6 * 100) + (4 * 10) + (3 * 1/10) + (2 * 1/100)
640.32 = 600 + 40 + 3/10 + 2/100
640.32 = 600 + 40 + 0.3 + 0.02
Expanded Form of 640.32
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