Among the workers in a certain factory, there are more female workers than male workers (2/3). Later, 45 male workers were replaced by female workers, so that the number of female workers reached the total number (20/29). How many female workers were there at that time?
某厂的工人中，女工比男工多(2/3)，后来又把45名男工换为女工，使得女工人数达到总人数的(20/29)，这时有多少名女工？
<gadget id="calculator">20 / 29</gadget>
<output>20/29 = around 0.689655</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 + 1 + (2/3)</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">(5/3) / (8/3)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(20/29) - (5/8)</gadget>
<output>15/232 = around 0.064655</output>

<gadget id="calculator">45 / (15/232)</gadget>
<output>696</output>

<gadget id="calculator">696 * (20/29)</gadget>
<output>480</output>

<result>480</result>