Weimin Candy Factory has a total of 320kg of fruit candy, each bag contains (1/8) kg, and the packers have packed (3/4). How many more bags do they have to pack to complete the packing task?
卫民糖果厂一共有320kg水果糖，每袋装(1/8)㎏，包装工人已经包装了(3/4)．她们还要包装多少袋才能完成包装任务？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">320 / (1/8)</gadget>
<output>2_560</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2_560 * (1/4)</gadget>
<output>640</output>

<result>640</result>