Naughty accidentally dropped the parentheses when calculating ((2/3)+12)*(1/2)-(1/7), how much difference is the result from the correct result?
淘气在计算((2/3)+12)*(1/2)-(1/7)时，不小心把小括号丢掉了，得出的结果与正确的结果相差多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">12 * (1/2)</gadget>
<output>6</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">6 - (1/7)</gadget>
<output>41/7 = around 5.857143</output>

<gadget id="calculator">(2/3) + (41/7)</gadget>
<output>137/21 = around 6.52381</output>

<gadget id="calculator">(2/3) + 12</gadget>
<output>38/3 = around 12.666667</output>

<gadget id="calculator">(38/3) * (1/2)</gadget>
<output>19/3 = around 6.333333</output>

<gadget id="calculator">(19/3) - (1/7)</gadget>
<output>130/21 = around 6.190476</output>

<gadget id="calculator">(137/21) - (130/21)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>