A textile factory plans to compile a batch of Chinese knots for export abroad, and has already compiled 440 knots, which is 40 more than the planned 40%. How many did you make up?
某纺织厂计划编一批中国结出口到国外，现已编好440个，比计划的40%还多40个，剩下的(3/7)交给启航小学的手工小组同学编，这些同学编了多少个？
<gadget id="calculator">440 - 40</gadget>
<output>400</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">400 / (2/5)</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 440</gadget>
<output>560</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">560 * (3/7)</gadget>
<output>240</output>

<result>240</result>