What is the product of the sum of 42 and 24 times their difference?
42与24的和乘以它们的差的积是多少？
<gadget id="calculator">42 + 24</gadget>
<output>66</output>

<gadget id="calculator">42 - 24</gadget>
<output>18</output>

<gadget id="calculator">66 * 18</gadget>
<output>1_188</output>

<result>1_188</result>