Subtract 12 sums of 0.64 from the sum of 8.63 and 4.27. What is the difference?
从8.63与4.27的和里减去12个0.64的和，差是多少？
<gadget id="calculator">8.63 + 4.27</gadget>
<output>12.9</output>

<gadget id="calculator">0.64 * 12</gadget>
<output>7.68</output>

<gadget id="calculator">12.9 - 7.68</gadget>
<output>5.22</output>

<result>5.22</result>