A certain factory has 450 workers, of which 36% are female workers. Due to production needs, another group of female workers are recruited. At this time, the number of female workers accounts for 40% of the total number of workers in the factory. How many female workers were recruited?
某工厂有工人450人，其中女工占36%，因生产需要又招进一批女工，这时女工人数占全厂工人总数的40%．又招进女工多少人？
<gadget id="calculator">36 / 100</gadget>
<output>9/25 = around 0.36</output>

<gadget id="calculator">1 - (9/25)</gadget>
<output>16/25 = around 0.64</output>

<gadget id="calculator">450 * (16/25)</gadget>
<output>288</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">288 / (3/5)</gadget>
<output>480</output>

<gadget id="calculator">480 - 450</gadget>
<output>30</output>

<result>30</result>