Master Wang needs to produce 1,400 parts, 450 of which have already been produced, and the rest will be completed within 19 hours, so how many parts should be completed per hour?
王师傅要生产1400个零件，已经生产了450个，剩下的要在19小时内完成，那么每小时应该完成多少个？
<gadget id="calculator">1_400 - 450</gadget>
<output>950</output>

<gadget id="calculator">950 / 19</gadget>
<output>50</output>

<result>50</result>