The ratio of number A to number B is 5:6, their sum is 66, what is their difference?
甲数和乙数的比是5：6，它们的和是66，它们的差是多少？
<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">66 / 11</gadget>
<output>6</output>

<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<result>6</result>