The perimeter of a rectangle is 144 cm, and the ratio of length to width is 5:3. What is the area of this rectangle in square centimetres.
一个长方形的周长是144厘米，长和宽的比是5：3．这个长方形的面积是多少平方厘米．
<gadget id="calculator">144 / 2</gadget>
<output>72</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">72 * (5/8)</gadget>
<output>45</output>

<gadget id="calculator">72 - 45</gadget>
<output>27</output>

<gadget id="calculator">45 * 27</gadget>
<output>1_215</output>

<result>1_215</result>