Two bottles of salt water with different salt content, bottle A 5000g, bottle B 3000g. After exchanging the same weight of two bottles of salt water, the salt content is the same. How many grams are the exchanged weights of A and B?
两瓶含盐率不同的盐水，甲瓶5000克，乙瓶3000克．两瓶盐水交换相同的重量后含盐率相同，甲、乙交换的重量是多少克？
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">5_000 * (3/8)</gadget>
<output>1_875</output>

<result>1_875</result>