Number A is 20, Number B is 60% of Number A, and (3/4) of Number C is Number B. What is the average of these three numbers?
甲数是20，乙数是甲数的60%，丙数的(3/4)是乙数，这三个数的平均数是多少．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 * (3/5)</gadget>
<output>12</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/5) / (3/4)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20 * (4/5)</gadget>
<output>16</output>

<gadget id="calculator">20 + 12 + 16</gadget>
<output>48</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<result>16</result>