Solve the equation: ((x)/4)=30%
解方程：((x)/4)=30%
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/10) / (1/4)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>