(5/8)*(9/10)+(5/16).
(5/8)*(9/10)+(5/16)．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(5/8) * (9/10)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">5 / 16</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">(9/16) + (5/16)</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>