Johnny's dad brought him to watch some horse racing and his dad bet money. On the first race, he lost $5. On the second race, he won $1 more than twice the amount he previously lost. On the third race, he lost 1.5 times as much as he won in the second race. How much did he lose on average that day?
On the second race he won $11 because 1+ 5 x 2 = 
<gadget id="calculator">1+5*2</gadget>
<output>11</output>
11.
On the third race he lost $15 because 10 x 1.5 = 
<gadget id="calculator">10*1.5</gadget>
<output>15</output>
15.
He lost a total of $20 on the first and third races because 15 + 5 = 
<gadget id="calculator">15+5</gadget>
<output>20</output>
20.

He lost $9 that day because 11 - 20 = 
<gadget id="calculator">11-20</gadget>
<output>-9</output>
-9.
He lost an average of $3 per race because 9 / 3 = 
<gadget id="calculator">9/3</gadget>
<output>3</output>
3.

<result>3</result>