Cut a rope into two sections A and B according to the ratio of 5:2. Section A is 2.4 meters longer than section B. How long is section B?
把一根绳子按5：2截成甲、乙两段，甲段比乙段长2.4米，乙段长几米？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">2.4 / 3</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 * 2</gadget>
<output>1.6</output>

<result>1.6</result>