Honghong bought an alarm clock for 11.5 yuan, and bought a stapler for 9.85 yuan. How much more does it cost to buy an alarm clock than to buy a stapler?
红红买了一个闹钟花了11.5元，买了一个订书器花了9.85元，买闹钟比买订书器多花多少元？
<gadget id="calculator">11.5 - 9.85</gadget>
<output>1.65</output>

<result>1.65</result>