James buys 2 pairs of shoes a month.  He spends $2640 on shoes each year.  How much does he pay on average for each pair of shoes?
He buys 2*12=
<gadget id="calculator">2*12</gadget>
<output>24</output>
24 pairs of shoes a year.
So he spends 2640/24=$
<gadget id="calculator">2640/24</gadget>
<output>110</output>
110 per pair.

<result>110</result>