The department store sold 20 TV sets and 13 washing machines today. What fraction of the number of TV sets sold are washing machines?
百货商店今天卖出20台电视机，13台洗衣机．卖出的电视机的台数是洗衣机的几分之几？
<gadget id="calculator">20 / 13</gadget>
<output>20/13 = around 1.538462</output>

<result>20/13 = around 1.538462</result>