There are two identical cups, A and B. There is half a cup of clear water in cup A, and 50% salt water in cup B. First, pour half of the salt water in cup B into cup A, and then pour half of the salt water in cup A into B. , at this time, how much of the salt in the second cup of salt water
有甲乙两个同样的杯子，甲杯中有半杯清水，乙中盛满了50%的盐水，先将乙杯的盐水的一半倒入甲中，再将甲中的盐水的一半倒入乙中，这时乙杯的盐占盐水的多少
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * (1/2)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) + (1/4)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>