rectangular photo frame uses a 4.5-meter-long wooden bar, and the length of the photo frame is 1.5 times the width. What is the approximate area of the glass used in this photo frame?
一个长方形相框用了4.5米长的木条，相框的长是宽的1.5倍，这个相框所配玻璃的面积大约是多少？
<gadget id="calculator">1 + 1.5</gadget>
<output>2.5</output>

<gadget id="calculator">4.5 / 2 / 2.5</gadget>
<output>0.9</output>

<gadget id="calculator">1.5 * 0.9</gadget>
<output>1.35</output>

<gadget id="calculator">1.35 * 0.9</gadget>
<output>1.215</output>

<result>1.215</result>