Groups A, B, and C jointly assemble 500 TV sets. The ratio of the number of units assembled by groups A and B is 5:3, and group C has 39 fewer units than group B. C How many TV sets can be assembled?
甲、乙、丙三组共同装配500台电视机．甲、乙两组装配的台数比是5：3，丙组比乙组少装39台．丙组装电视机多少台？
<gadget id="calculator">500 + 39</gadget>
<output>539</output>

<gadget id="calculator">5 + 3 + 3</gadget>
<output>11</output>

<gadget id="calculator">3 / 11</gadget>
<output>3/11 = around 0.272727</output>

<gadget id="calculator">539 * (3/11)</gadget>
<output>147</output>

<gadget id="calculator">147 - 39</gadget>
<output>108</output>

<result>108</result>