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    <body><span class="vcard"><a class="email" href="mailto:himajin100000@gmail.com" title="himajin100000@gmail.com">himajin100000@gmail.com</a>
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          <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - LibreOffice CALC TBILLYIELD function returns incorrect interest rate (Too low)."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=130823">bug 130823</a>
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            <th>What</th>
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           <td>erack@redhat.com
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            <b><a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - LibreOffice CALC TBILLYIELD function returns incorrect interest rate (Too low)."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=130823#c9">Comment # 9</a>
              on <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - LibreOffice CALC TBILLYIELD function returns incorrect interest rate (Too low)."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=130823">bug 130823</a>
              from <span class="vcard"><a class="email" href="mailto:himajin100000@gmail.com" title="himajin100000@gmail.com">himajin100000@gmail.com</a>
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        <pre><a href="https://opengrok.libreoffice.org/xref/core/scaddins/source/analysis/financial.cxx?r=3bf3face#381">https://opengrok.libreoffice.org/xref/core/scaddins/source/analysis/financial.cxx?r=3bf3face#381</a>

(100 / 99.8775 - 99.8775 / 99.8775) * 360 / x = 0.014718
=>
x = (100 / 99.8775 - 99.8775 / 99.8775) * 360 / 0.014718 = 30

<a href="https://support.microsoft.com/en-us/office/tbillyield-function-6d381232-f4b0-4cd5-8e97-45b9c03468ba?ui=en-us&rs=en-us&ad=us">https://support.microsoft.com/en-us/office/tbillyield-function-6d381232-f4b0-4cd5-8e97-45b9c03468ba?ui=en-us&rs=en-us&ad=us</a>

(100-99.8775)/99.8775 * 360 / ( DATE(2020,3,24) - DATE(2020,2,25))
= 0.0157693174138322

February has only 28 or 29 days
I'm not familiar with finance, and I don't know which result is expected.</pre>
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