(1/13)-(1/52)-(1/273)-(1/429)=how much.
(1/13)-(1/52)-(1/273)-(1/429)=多少．
<gadget id="calculator">1 / 13</gadget>
<output>1/13 = around 0.076923</output>

<gadget id="calculator">709 / 924</gadget>
<output>709/924 = around 0.767316</output>

<gadget id="calculator">(1/13) * (709/924)</gadget>
<output>709/12_012 = around 0.059024</output>

<result>709/12_012 = around 0.059024</result>