There are 16 red chalks on Mr. Li's podium, the number of white chalks is more than red chalks (1/4), and the yellow chalks are white chalks (3/5). How many yellow chalks are there?
李老师的讲台上有红粉笔16支，白粉笔的支数比红粉笔多(1/4)，黄粉笔是白粉笔的(3/5)．黄粉笔有多少支？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">16 * (5/4) * (3/5)</gadget>
<output>12</output>

<result>12</result>