Calculation: (1/5)*((7/40)/(3-(12/5)*(15/16)))=how much.
计算：(1/5)*((7/40)/(3-(12/5)*(15/16)))=多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">7 / 40</gadget>
<output>7/40 = around 0.175</output>

<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">15 / 16</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">(12/5) * (15/16)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3 - (9/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(7/40) / (3/4)</gadget>
<output>7/30 = around 0.233333</output>

<gadget id="calculator">(1/5) * (7/30)</gadget>
<output>7/150 = around 0.046667</output>

<result>7/150 = around 0.046667</result>