James buys 3 dirt bikes for $150 each and 4 off-road vehicles for $300 each.  It also cost him $25 to register each of these.  How much did he pay for everything?
The dirtbikes cost 3*150=$
<gadget id="calculator">3*150</gadget>
<output>450</output>
450.
The off-road vehicles cost 300*4=$
<gadget id="calculator">300*4</gadget>
<output>1_200</output>
1200.
He had to register 3+4=
<gadget id="calculator">3+4</gadget>
<output>7</output>
7 vehicles.
That means registration cost 25*7=$
<gadget id="calculator">25*7</gadget>
<output>175</output>
175.
So the total cost of everything was 450+1200+175=$
<gadget id="calculator">450+1200+175</gadget>
<output>1_825</output>
1825.

<result>1_825</result>