There are 240 male and female employees in a workshop, of which male employees account for 30%, and some female employees are recruited later. At this time, the ratio of male employees to female employees is 1:7. How many female workers are recruited in this workshop?
某车间有男女职工240人，其中男职工占30%，后来又招来若干女职工，这时男职工和女职工的比是1：7．这个车间招来了多少女职工？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">240 * (3/10)</gadget>
<output>72</output>

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

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(1/7) * 240 * (7/10)</gadget>
<output>24</output>

<gadget id="calculator">72 - 24</gadget>
<output>48</output>

<gadget id="calculator">48 / (1/7)</gadget>
<output>336</output>

<result>336</result>