A and B are two ropes with a total length of 22 meters. It is known that the length of A is three times that of B. How much longer is A than B?
甲乙两绳共长22米，已知甲的长度是乙的3倍，求甲比乙长多少米？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">22 / 4</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">(11/2) * 3</gadget>
<output>33/2 = around 16.5</output>

<gadget id="calculator">(33/2) - (11/2)</gadget>
<output>11</output>

<result>11</result>