Cut a rope into A and B according to the ratio of 5:3. It is known that B is 1.2 meters shorter than A. How long is this rope in meters?
把一根绳子按5：3截成甲、乙两段，已知乙比甲短1.2米．这根绳子原来全长多少米？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">1.2 / 2</gadget>
<output>0.6</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">0.6 * 8</gadget>
<output>4.8</output>

<result>4.8</result>