Calculation: (3/5)+(5/6)-(8/15).
计算：(3/5)+(5/6)-(8/15)．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">(5/6) - (8/15)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/5) + (3/10)</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>