Sam was collecting cans for recycling. On Saturday he filled 3 bags up and on Sunday he filled 4 more bags. If each bag had 9 cans in it, how many cans did he pick up total?
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">9 * 7</gadget>
<output>63</output>

<result>63</result>