There are 6 people going on an airplane trip.  They each have 5 bags of luggage.  Each of their bags weighs the maximum weight allowed, 50 pounds.  The airplane can hold a total luggage weight of 6000 pounds.  How many more bags at maximum weight can the plane hold?
Each person brought 5 bags * 50 pounds per bag = 
<gadget id="calculator">5*50</gadget>
<output>250</output>
250 pounds per person.
There are 6 people * 250 pounds per person = 
<gadget id="calculator">6*250</gadget>
<output>1_500</output>
1500 pounds of luggage on the plane.
The plan can hold 6000 pounds - 1500 pounds = 
<gadget id="calculator">6000-1500</gadget>
<output>4_500</output>
4500 pounds of luggage space left.
The plane can hold an additional 4500 pounds / 50 pounds per bag = 
<gadget id="calculator">4500/50</gadget>
<output>90</output>
90 pieces of luggage.

<result>90</result>