Bernie loves eating chocolate. He buys two chocolates every week at the local store. One chocolate costs him $3. In a different store, there is a long-term promotion, during which each chocolate costs only $2. How much would Bernie save in three weeks, if he would buy his chocolates in this store instead of his local one?
During three weeks, Bernie buys 3 * 2 = 
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 chocolates.
In the local store, he pays for them 6 * 3 = $
<gadget id="calculator">6*3</gadget>
<output>18</output>
18.
If Bernie would buy the same chocolates in the different store, he would pay 6 * 2 = $
<gadget id="calculator">6*2</gadget>
<output>12</output>
12.
So Bernie would be able to save 18 - 12 = $
<gadget id="calculator">18-12</gadget>
<output>6</output>
6.

<result>6</result>