James catches 3 kinds of fish.  He catches 200 pounds of trout,  50% more pounds of salmon, and twice as much Tuna.  How many pounds of fish did he catch?
He caught 200*.55=100 pounds more salmon than trout.
So he caught 200+100=
<gadget id="calculator">200+100</gadget>
<output>300</output>
300 pounds of salmon.
He caught 300*2=
<gadget id="calculator">300*2</gadget>
<output>600</output>
600 pounds of tuna.
So in total, he caught 600+300+200=
<gadget id="calculator">600+300+200</gadget>
<output>1_100</output>
1100 pounds of fish.

<result>1_100</result>