(1/5) of 4t is equal to (4/5) of t.
4t的(1/5)等于多少t的(4/5)．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<result>1</result>