John plans to sell all his toys and use the money to buy video games. He has 13 lego sets and he sells them for $15 each. He ends up buying 8 video games for $20 each and has $5 left. How many lego sets does he still have?
He spent $160 on video games because 8 x 20 = 
<gadget id="calculator">8*20</gadget>
<output>160</output>
160.
He earned $165 from his sale because 160 + 5 = 
<gadget id="calculator">160+5</gadget>
<output>165</output>
165.
He sold 11 lego sets because 11 x 15 = 
<gadget id="calculator">11*15</gadget>
<output>165</output>
165.
He has 2 sets left because 13 - 11 = 
<gadget id="calculator">13-11</gadget>
<output>2</output>
2.

<result>2</result>