In a workshop, 336 looms require 21 workers. According to this calculation, if 64 looms are added, how many workers are needed in total?
一个车间，336台织布机需要工人21人，照这样计算，增加64台织布机，共需要工人多少人？
<gadget id="calculator">336 + 64</gadget>
<output>400</output>

<gadget id="calculator">336 / 21</gadget>
<output>16</output>

<gadget id="calculator">400 / 16</gadget>
<output>25</output>

<result>25</result>