(799.81/64)÷ (10/799.92) × (129.84/130) = ?
(799.98/64)÷ (10/799.99) × (129.9/130) = ? => ? = (800/64)× (800/10) × (130/130) => ? = 12.5 × 80 × 1 => ? = 1000
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