Paul went to a shop to buy some groceries. He bought some bread for $2, butter for $3, and juice for two times the price of the bread. He had $15 for his shopping. How much money did Paul have left?
The price of the juice was 2 * 2 = $
<gadget id="calculator">2*2</gadget>
<output>4</output>
4.
So in total he paid for his shopping 2 + 3 + 4 = $
<gadget id="calculator">2+3+4</gadget>
<output>9</output>
9.
That means he had 15 - 9 = $
<gadget id="calculator">15-9</gadget>
<output>6</output>
6 left.

<result>6</result>