Calculation: 24/((28/5)*(21-(2/7)))=how much.
计算：24/((28/5)*(21-(2/7)))=多少．
<gadget id="calculator">28 / 5</gadget>
<output>28/5 = around 5.6</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">21 - (2/7)</gadget>
<output>145/7 = around 20.714286</output>

<gadget id="calculator">(28/5) * (145/7)</gadget>
<output>116</output>

<gadget id="calculator">24 / 116</gadget>
<output>6/29 = around 0.206897</output>

<result>6/29 = around 0.206897</result>