Children A, B, C, and D all took out some money to buy a toy car worth 60 yuan, among which A’s money accounted for half of the other children’s total, and B’s money accounted for the other three. (1/3) of a child, the money given by C accounts for (1/4) of the total of the other three children. So how much did Ding take out?
甲、乙、丙、丁四位小朋友都拿出一些钱共同去买了一辆价值60元的玩具车，其中甲拿出的钱占其他小朋友的总数的一半，乙拿出的钱占其他三位小朋友的(1/3)，丙拿出的钱占其他三位小朋友的总数的(1/4)．那么丁拿出了多少钱？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/3) - (1/4) - (1/5)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">60 * (13/60)</gadget>
<output>13</output>

<result>13</result>