Solve the equation: ((x)/(0.5))/(1/4)=((0.15)/(60%)).
解方程：((x)/(0.5))/(1/4)=((0.15)/(60%))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">0.15 * 0.5 * (1/4)</gadget>
<output>0.01875</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">0.01875 / (3/5)</gadget>
<output>0.03125</output>

<result>0.03125</result>