Jayden had $70 from selling pictures he took as a hobby.  His sister Ava gave him half of her $90 allowance to help him buy a new camera that costs $200. How much more does Jayden need to buy the camera?
Ava gave $90/2 = $
<gadget id="calculator">90/2</gadget>
<output>45</output>
45 to Jayden.
Jayden now has $70 + $45 = $
<gadget id="calculator">70+45</gadget>
<output>115</output>
115.
So, Jayden needs $200 - $115 = $
<gadget id="calculator">200-115</gadget>
<output>85</output>
85 to buy the new camera.

<result>85</result>