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4.25x0.99+0.01
=4.25x(1-0.01)+0.01
=4.25-4.25x0.01+0.01
=4.25-0.0425+0.01
=4.2075+0.01
=4.2175
=4.25x(1-0.01)+0.01
=4.25-4.25x0.01+0.01
=4.25-0.0425+0.01
=4.2075+0.01
=4.2175
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