4 workers process 455 parts. In the first 4 days, one worker asks for leave for one day due to work. As a result, a total of 195 parts are processed. According to this calculation, if no one asks for leave in the future, how many days will it take to complete the task. (Note: Each worker processes the same number of parts per day).
4名工人加工455个零件，开始的4天中有一名工人因事请假1天，结果共加工195个零件．照这样计算，如果以后无人请假，那么还要多少天可以完成任务．(注：每名工人每天加工零件个数相同)．
<gadget id="calculator">455 - 195</gadget>
<output>260</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">16 - 1</gadget>
<output>15</output>

<gadget id="calculator">195 / 15</gadget>
<output>13</output>

<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<gadget id="calculator">260 / 52</gadget>
<output>5</output>

<result>5</result>