12 workers can produce 72 parts in 0.4 hours. According to this calculation, how many hours will it take for 15 workers to produce 180 parts?
12名工人0.4小时可以生产零件72个，照这样计算，15名工人生产180个零件，需要多少小时？
<gadget id="calculator">72 / 12 / 0.4</gadget>
<output>15</output>

<gadget id="calculator">15 * 15</gadget>
<output>225</output>

<gadget id="calculator">180 / 225</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>