A rectangular playground, the ratio of length to width is 5:3, the width of this playground is 54 meters, what is the length of the playground in meters?
一个长方形操场，长和宽的比是5：3，这个操场的宽是54米，操场的长是多少米？
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">54 * (5/3)</gadget>
<output>90</output>

<result>90</result>