After a food factory introduced a modern production line, it can produce 2,400 boxes of biscuits per hour on average, which is 450 boxes less than the original three times. How many boxes are produced on average per hour?
某食品厂引进现代化生产线后，平均每小时可生产饼干2400盒，比原来的3倍少450盒．原来平均每小时生产多少盒？
<gadget id="calculator">2_400 + 450</gadget>
<output>2_850</output>

<gadget id="calculator">2_850 / 3</gadget>
<output>950</output>

<result>950</result>