It is known that the ratio of length to width of a rectangle is 4:3, and the length is 16 cm, what is the width in cm?
已知长方形的长和宽的比是4：3，长为16厘米，则宽为多少厘米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<result>12</result>