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          <p>Usual calculus, with units</p>
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          <p>Unitless version</p>
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          <p>Reasoning with dummy but practical units</p>
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          <p style="font-family: Consolas;">If I have \[REGION[9b054f00702c4ada8fbfb8fd74988058]]\ for \[REGION[fb47f1bdd1534d5a95e1a870fcd69d01]]\ then each bag needs to store \[REGION[21d707bd61464052a1e4992667ab4e6c]]\ </p>
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          <p style="font-family: Consolas;">Now, I can use \[REGION[7844c70da02443988781a2386f4e7e69]]\ as unitless coefficient for further calculations.</p>
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