Solve the equation: 60*65%-30%x=27.
解方程：60*65%-30%x=27．
<gadget id="calculator">39 - 27</gadget>
<output>12</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">12 / (3/10)</gadget>
<output>40</output>

<result>40</result>