Digging a 3,240-meter-long canal is planned to take 75 days to complete, but the actual digging is 1.8 meters more than planned every day. How many days will it actually be completed?
挖一条3240米长的水渠，计划用75天完成，实际每天比计划多挖1.8米，实际多少天完成？
<gadget id="calculator">3_240 / 75</gadget>
<output>216/5 = around 43.2</output>

<gadget id="calculator">(216/5) + 1.8</gadget>
<output>45</output>

<gadget id="calculator">3_240 / 45</gadget>
<output>72</output>

<result>72</result>