What's the quotient of 4.5 plus 3 minus 0.75, and then divide by 15? Four times of a number plus the sum of 2.7, and then divide by 0.3 to get 9.8（ Formula calculation)

1. Quotient = (4.5 + 3-0.75) △ 15 = 0.55
2. This number = (9.8 × 0.3-2.7) △ 4 = 0.06

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