The farm tool factory needs to produce 1800 pieces of farm tools, and (3/10) of the total is completed in the first 3 days. According to this calculation, how many days will it take to produce this batch of farm tools?
农具厂要生产1800件农具，前3天完成了总数的(3/10)，照这样计算，生产这批农具共要多少天？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) / 3</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / (1/10)</gadget>
<output>10</output>

<result>10</result>