One number is (3/8) and the other number is (1/8), what is the difference between their sum and ratio
一个数是(3/8)，另一个数是(1/8)，它们的和比差多多少
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(3/8) + (1/8)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/8) - (1/8)</gadget>
<output>1/4 = around 0.25</output>

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

<result>1/4 = around 0.25</result>