87.84 = (8 * 101) + (7 * 100) + (8 * 1/101) + (4 * 1/102)
87.84 = (8 * 10) + (7 * 1) + (8 * 1/10) + (4 * 1/100)
87.84 = 80 + 7 + 8/10 + 4/100
87.84 = 80 + 7 + 0.8 + 0.04
Expanded Form of 87.84
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