The ratio of length to width of a rectangle is 5:3, the known length is 2 cm, how many centimeters is the width?
一个长方形的长与宽的比是5：3，已知长是2cm，宽是多少厘米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 3</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>