Solve the equation: 1(2/3)-x=1(1/60).
解方程：1(2/3)-x=1(1/60)．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 * (2/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 * (1/60)</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(2/3) - (1/60)</gadget>
<output>13/20 = around 0.65</output>

<result>13/20 = around 0.65</result>