Calculation: (3/8)*(7/4)-(3/4)*(3/8)+(3/8).
计算：(3/8)*(7/4)-(3/4)*(3/8)+(3/8)．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">7 / 4</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">(3/8) * (7/4)</gadget>
<output>21/32 = around 0.65625</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) * (3/8)</gadget>
<output>9/32 = around 0.28125</output>

<gadget id="calculator">(21/32) - (9/32)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) + (3/8)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>