Two computer text entry personnel, A and B, need to jointly enter a manuscript of 15400 words. When A completes the entry task (5/6). , when B completes 80% of the entry task, the number of words that the two have not yet entered is equal. Q: How many words is A's entry task?
甲、乙两名计算机文字录入人员要共同录入一份15400字的文稿．当甲完成录入任务的(5/6)．，乙完成录入任务的80%时，两人尚未录入的字数相等．问：甲的录入任务是多少个字？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / (1/5)</gadget>
<output>5</output>

<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">15_400 / 11</gadget>
<output>1_400</output>

<gadget id="calculator">1_400 * 6</gadget>
<output>8_400</output>

<result>8_400</result>