There are 240 workers in a certain workshop, female workers are transferred away (1/7), and after male workers are transferred 25%, there are still 195 workers in the workshop. How many female workers were there in the workshop?
某车间有工人240人，女工调走(1/7)，男工调走25%后，车间还剩下195人，该车间原有女工多少人？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">240 * (3/4)</gadget>
<output>180</output>

<gadget id="calculator">195 - 180</gadget>
<output>15</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7) - (3/4)</gadget>
<output>3/28 = around 0.107143</output>

<gadget id="calculator">15 / (3/28)</gadget>
<output>140</output>

<result>140</result>