Ellie has 8 pairs of shoes. Riley has 3 fewer. How many pairs of shoes do they have in all?
Riley has 3 fewer pairs of shoes than Ellie's 8, so 8 - 3 = 
<gadget id="calculator">8-3</gadget>
<output>5</output>
5 pairs of shoes.
Together, they have Ellie's 8 + Riley's 5 = 
<gadget id="calculator">8+5</gadget>
<output>13</output>
13 pairs of shoes.

<result>13</result>