If (1/10) of number A is given to number B, then the numbers A and B are just equal. It turns out that the number B is the number A.
如果把甲数的(1/10)给乙数，则甲、乙两数刚好相等．原来乙数是甲数的多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>