Uncle Wang processes 5 parts in 4.5 minutes. According to this calculation, how many minutes will it take to process the same 2 parts.
王叔叔4.5分钟加工5个零件，照这样计算，加工同样的2个零件，需要多少分钟．
<gadget id="calculator">4.5 / 5</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 2</gadget>
<output>1.8</output>

<result>1.8</result>