How many tons is (3/4) of (2/7) tons?
(2/7)吨的(3/4)是多少吨．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

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

<gadget id="calculator">(2/7) * (3/4)</gadget>
<output>3/14 = around 0.214286</output>

<result>3/14 = around 0.214286</result>