Haley baked 20 cupcakes for her school's bake sale. If her brother, Todd, ate 11 of them how many packages could she make if she put 3 cupcake in each package?
<gadget id="calculator">20 - 11</gadget>
<output>9</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>