Master Wang processes 494 parts, and he produces 190 parts in 5 hours. According to this calculation, how many hours will be processed? (restricted to proportional solution)
王师傅加工494个零件，他5小时生产190个零件，照这样计算，还需要加工多少小时？(限用比例解)
<gadget id="calculator">494 - 190</gadget>
<output>304</output>

<gadget id="calculator">190 / 5</gadget>
<output>38</output>

<gadget id="calculator">304 / 38</gadget>
<output>8</output>

<result>8</result>