((13/58)*((1/2)+(8/13)))/(9/14).
((13/58)*((1/2)+(8/13)))/(9/14)．
<gadget id="calculator">13 / 58</gadget>
<output>13/58 = around 0.224138</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 / 13</gadget>
<output>8/13 = around 0.615385</output>

<gadget id="calculator">(1/2) + (8/13)</gadget>
<output>29/26 = around 1.115385</output>

<gadget id="calculator">(13/58) * (29/26)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">9 / 14</gadget>
<output>9/14 = around 0.642857</output>

<gadget id="calculator">(1/4) / (9/14)</gadget>
<output>7/18 = around 0.388889</output>

<result>7/18 = around 0.388889</result>