What is the product of the sum of 4.6 plus 8.4 times the difference of 8.4 minus 7.75?
4.6加上8.4的和乘8.4减去7.75的差，积是多少？
<gadget id="calculator">4.6 + 8.4</gadget>
<output>13</output>

<gadget id="calculator">8.4 - 7.75</gadget>
<output>0.65</output>

<gadget id="calculator">13 * 0.65</gadget>
<output>8.45</output>

<result>8.45</result>