Calculation: (3/8)+(4/5)+(1/4)*(2/5).
计算：(3/8)+(4/5)+(1/4)*(2/5)．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/4) * (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/8) + (4/5) + (1/10)</gadget>
<output>51/40 = around 1.275</output>

<result>51/40 = around 1.275</result>