What is the product of the sum of 3 and 6 multiplied by 4? (column calculation)
3与6的和乘以4，积是多少？(列式计算)
<gadget id="calculator">3 + 6</gadget>
<output>9</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<result>36</result>