A rectangle has a length of 20m and a width of 15m, what is the ratio of the length to the width?
一个长方形，长20m，宽15m，长与宽的比值是多少．
<gadget id="calculator">20 / 15</gadget>
<output>4/3 = around 1.333333</output>

<result>4/3 = around 1.333333</result>