7,990.23 = (7 * 103) + (9 * 102) + (9 * 101) + (2 * 1/101) + (3 * 1/102)
7,990.23 = (7 * 1,000) + (9 * 100) + (9 * 10) + (2 * 1/10) + (3 * 1/100)
7,990.23 = 7,000 + 900 + 90 + 2/10 + 3/100
7,990.23 = 7,000 + 900 + 90 + 0.2 + 0.03
Expanded Form of 7,990.23
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