At a certain car dealership, 15% of the cars cost less than $15000 and 40% of the cars cost more than $20000. If there are 3000 cars at the dealership, how many of them cost between $15000 and $20000?
15% of 3000 cars is (15/100)*3000 = 
<gadget id="calculator">(15/100)*3000</gadget>
<output>450</output>
450 cars
40% of 3000 cars is (40/100)*3000 = 
<gadget id="calculator">(40/100)*3000</gadget>
<output>1_200</output>
1200 cars
450+1200 = 
<gadget id="calculator">450+1200</gadget>
<output>1_650</output>
1650 cars which cost either less than $15000 or more than $20000.
Out of 3000 cars, there will then be 3000-1650 = 
<gadget id="calculator">3000-1650</gadget>
<output>1_350</output>
1350 cars left which cost between $15000 and $20000.

<result>1_350</result>