The former term of the ratio is divided by 3, the latter term is expanded to 6 times of the original, and the ratio is reduced to the original value
比的前项除以3，后项扩大为原来的6倍，比值缩小为原来的去多少
<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">(10/3) / 60</gadget>
<output>1/18 = around 0.055556</output>

<result>1/18 = around 0.055556</result>