Jenna starts out with 8 sapphires. She trades 3 sapphires for two rubies. If sapphires are worth $800 and rubies are worth $1200, how much money are all her jewels worth?
First find the total number of sapphires Jenna still has: 8 sapphires - 3 sapphires = 
<gadget id="calculator">8-3</gadget>
<output>5</output>
5 sapphires.
Then multiply this number by the cost per sapphire to find the total cost of the sapphires: 5 sapphires * $800/sapphire = $
<gadget id="calculator">5*800</gadget>
<output>4_000</output>
4000.
Then find the total value of the rubies: 2 rubies * $1200/ruby = $
<gadget id="calculator">2*1200</gadget>
<output>2_400</output>
2400.
Then amount this to the cost of the sapphires to find the total value of her jewelry: $2400 + $4000 = $
<gadget id="calculator">2400+4000</gadget>
<output>6_400</output>
6400.

<result>6_400</result>