How many tons is (3/4) less than (7/8) tons?
比(7/8)吨少(3/4)是多少吨．
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

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

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(7/8) * (1/4)</gadget>
<output>7/32 = around 0.21875</output>

<result>7/32 = around 0.21875</result>